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thorn_aitc |
//===============================
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| 2 |
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// Degital Clock using IRQ Timer
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//-------------------------------
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// for VirtexE Evaluation Board
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// Apr.30 2003 Ver.1
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//===============================
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//======================================================
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// Address Map
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//======================================================
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// address sz wt wd device
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// 00000000-00001FFF 8K 0 32 ROM (code)
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// 00002000-00003DFF 6K 0 32 RAM (data)
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// 00003E00-00003FFF 512 0 32 RAM (stack)
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//
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// 00000000-0000FFFF 64K 0 32 RAM (shadow every 16KB)
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// 00010000-0001FFFF 64K 3 32 RAM (shadow every 16KB)
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// 00020000-0002FFFF 64K 0 16 RAM (shadow every 16KB)
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// 00030000-0003FFFF 64K 3 16 RAM (shadow every 16KB)
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// 00040000-ABCCFFFF (shadow RAM)
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// ABCD0000-ABCD00FF 256 3 32 PIO (shadow every 4B)
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// ABCD0100-ABCD01FF 256 3 32 UART(shadow every 4B)
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// ABCD0200-ABCD02FF 256 3 32 SYS (shadow every 8B)
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// ABCD0300-FFFBFFFF (shadow RAM)
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// FFFC0000-FFFCFFFF 64K 0 32 RAM (shadow every 16KB)
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// FFFD0000-FFFDFFFF 64K 3 32 RAM (shadow every 16KB)
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// FFFE0000-FFFEFFFF 64K 0 16 RAM (shadow every 16KB)
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// FFFF0000-FFFFFFFF 64K 3 16 RAM (shadow every 16KB)
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//
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//======================================================
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// PORT OUTPUT
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//======================================================
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// ABCD0000 : reserved
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// 31 30 29 28 27 26 25 24
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | | | | | | | | |
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// -----------------------------------------------;
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//
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// ABCD0001 : KEYYO (Key SCAN Y-axis out)
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// 23 22 21 20 19 18 17 16
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | | | | KY4 | KY3 | KY2 | KY1 | KY0 |
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// -----------------------------------------------
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//
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// ABCD0002 : LCDCON (LCD Control Signal)
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// 15 14 13 12 11 10 9 8
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | | | | | | E | R/W | RS |
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// -----------------------------------------------
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//
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// ABCD0003 : LCDOUT (Write Data to LCD)
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// 7 6 5 4 3 2 1 0
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | DW7 | DW6 | DW5 | DW4 | DW3 | DW2 | DW1 | DW0 |
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// -----------------------------------------------
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//
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//======================================================
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// PORT INPUT
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//======================================================
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// ABCD0000 : reserved
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// 31 30 29 28 27 26 25 24
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | | | | | | | | |
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// -----------------------------------------------;
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//
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// ABCD0001 : KEYXI (Key SCAN X-axis in)
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// 23 22 21 20 19 18 17 16
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | | | | KX4 | KX3 | KX2 | KX1 | KX0 |
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// -----------------------------------------------
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//
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// ABCD0002 : reserved
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// 15 14 13 12 11 10 9 8
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | | | | | | | | |
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// -----------------------------------------------
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//
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// ABCD0003 : LCDIN (Read Data from LCD)
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// 7 6 5 4 3 2 1 0
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 | DR0 |
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// -----------------------------------------------
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//
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//======================================================
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// UART: SASC (www.opencores.com)
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// Simple Asynchronous Serial Communication Device
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//======================================================
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// ABCD0100 : UARTBG0 Baud Rate Generator Div0 (R/W)
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// 31 30 29 28 27 26 25 24
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | B07 | B06 | B05 | B04 | B03 | B02 | B01 | B00 |
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// -----------------------------------------------
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//
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// ABCD0101 : UARTBG1 Baud Rate Generator Div1 (R/W)
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// 23 22 21 20 19 18 17 16
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | B17 | B16 | B15 | B14 | B13 | B12 | B11 | B10 |
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// -----------------------------------------------
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//
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// ABCD0102 : UARTCON (TXF=full_o, RXE=empty_o) (R only)
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// 15 14 13 12 11 10 9 8
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | | | | | | | TXF | RXE |
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| 115 |
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// -----------------------------------------------
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//
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// ABCD0103 : UARTTXD(W only)/UARTRXD(R only)
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// 7 6 5 4 3 2 1 0
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// 7 6 5 4 3 2 1 0
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// -----------------------------------------------
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// | TR7 | TR6 | TR5 | TR4 | TR3 | TR2 | TR1 | TR0 |
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| 122 |
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// -----------------------------------------------
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//
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//======================================================
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// System Controller
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// Interrupt and Exception Controller
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//======================================================
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// ABCD0200 : INTCTL Interrupt Control (32bit R/W only)
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// 31 30 29 28 27 26 25 24
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| 130 |
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// -----------------------------------------------
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// |E_NMI|E_IRQ|E_CER|E_DER|E_MRS| |TMRON|BRKON|
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// -----------------------------------------------
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// 23 22 21 20 19 18 17 16
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// -----------------------------------------------
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| 135 |
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// |ILVL3|ILVL2|ILVL1|ILVL0|IVEC7|IVEC6|IVEC5|IVEC4|
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| 136 |
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// -----------------------------------------------
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// 15 14 13 12 11 10 9 8
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| 138 |
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// -----------------------------------------------
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| 139 |
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// |IVEC3|IVEC2|IVEC1|IVEC0|TMR11|TMR10|TMR09|TMR08|
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| 140 |
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// -----------------------------------------------
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| 141 |
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// 7 6 5 4 3 2 1 0
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| 142 |
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// -----------------------------------------------
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// |TMR07|TMR06|TMR05|TMR04|TMR03|TMR02|TMR01|TMR00|
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| 144 |
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// -----------------------------------------------
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| 145 |
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// bit31: E_NMI Emulate NMI Interrupt (W only)
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| 146 |
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// bit30: E_IRQ Emulate IRQ Interrupt (W only)
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| 147 |
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// bit29: E_CER Emulate CPU Address Error (W only)
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| 148 |
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// bit28: E_DER Emulate DMA Address Error (W only)
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| 149 |
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// bit27: E_MRS Emulate Manual Reset (W only)
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| 150 |
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// bit26: reserved
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// bit25: TMRON INTTMR OFF/ON (0:OFF, 1:ON)
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| 152 |
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// bit24: BRKON Address Break(NMI) OFF/ON (0:OFF, 1:ON)
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| 153 |
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// bit23: ILVL3 IRQ ILevel 3
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// bit22: ILVL2 IRQ ILevel 2
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// bit21: ILVL1 IRQ ILevel 1
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// bit20: ILVL0 IRQ ILevel 0
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// bit19: IVEC7 IRQ Vector 7
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// bit18: IVEC6 IRQ Vector 6
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| 159 |
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// bit17: IVEC5 IRQ Vector 5
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// bit16: IVEC4 IRQ Vector 4
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// bit15: IVEC3 IRQ Vector 3
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| 162 |
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// bit14: IVEC2 IRQ Vector 2
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// bit13: IVEC1 IRQ Vector 1
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// bit12: IVEC0 IRQ Vector 0
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// bit11: TMR11 (12 bit interval timer to generate IRQ)
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// ...
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// bit 0: TMR00 (12 bit interval timer to generate IRQ)
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//
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// ABCD0204 : BRKADR Break Address (16bit R/W only)
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| 170 |
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// 15 14 13 12 11 10 9 8
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| 171 |
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// -----------------------------------------------
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| 172 |
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// |ADR15|ADR14|ADR13|ADR12|ADR11|ADR10|ADR09|ADR08|
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| 173 |
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// -----------------------------------------------
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| 174 |
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// 7 6 5 4 3 2 1 0
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| 175 |
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// -----------------------------------------------
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| 176 |
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// |ADR07|ADR06|ADR05|ADR04|ADR03|ADR02|ADR01|ADR00|
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| 177 |
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// -----------------------------------------------
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| 178 |
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// bit15: ADR15 Break Address15
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// ...
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| 180 |
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// bit00: ADR00 Break Address00
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//
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#include "common.h"
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| 185 |
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//=================
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| 186 |
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// Define Functions
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| 187 |
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//=================
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| 188 |
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void disp_time(void);
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| 189 |
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void int_timer(int onoff);
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| 190 |
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unsigned char command(unsigned char *data);
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| 191 |
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unsigned char hex2asc(unsigned char hex);
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| 192 |
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unsigned char asc2hex(unsigned char asc);
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| 193 |
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| 194 |
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void waitNms(unsigned char n);
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| 195 |
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unsigned char key_scan();
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| 196 |
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unsigned char key_wait_on(void);
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| 197 |
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void key_wait_off(void);
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| 198 |
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| 199 |
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void lcd_disp_char(unsigned char data);
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| 200 |
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void lcd_disp_long(unsigned long data);
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| 201 |
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void lcd_cursor(unsigned char con);
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| 202 |
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void lcd_erase(unsigned char pos);
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| 203 |
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void lcd_message(unsigned char pos, unsigned char *pstr);
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| 204 |
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void lcd_disp(unsigned char chr);
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| 205 |
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void lcd_pos(unsigned char pos);
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| 206 |
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void lcd_ready(void);
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| 207 |
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unsigned char lcd_rd(int);
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| 208 |
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void lcd_wr(int, unsigned char);
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| 209 |
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void lcd_init(void);
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| 210 |
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| 211 |
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//----------------
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| 212 |
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// Global Variables
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| 213 |
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//----------------
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| 214 |
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unsigned char mes_welcome[] = "Interrupt! Clock";
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| 215 |
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unsigned char mes_time[] = "Time----";
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| 216 |
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unsigned char mes_hour[] = "Input Hour =? ";
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| 217 |
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unsigned char mes_min[] = "Input Min =? ";
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| 218 |
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unsigned char mes_sec[] = "Input Sec =? ";
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| 219 |
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unsigned char hour;
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| 220 |
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unsigned char min;
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| 221 |
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unsigned char sec;
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| 222 |
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unsigned long clock;
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| 223 |
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unsigned long onesec;
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| 224 |
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int countup;
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| 225 |
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| 226 |
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//============
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| 227 |
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// IRQ Handler
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| 228 |
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//============
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| 229 |
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void irq_handler(void)
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| 230 |
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{
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| 231 |
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// Timer Interval = 50ns * 2^12 = 50ns * 4096
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| 232 |
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// 1sec = 50ns * 2E+07 (0x01312d00)
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| 233 |
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| 234 |
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// clock onesec
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| 235 |
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// 00000000 00000000
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| 236 |
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// 00000000 01312d00
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| 237 |
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// ...
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| 238 |
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// 01313000 > 01312d00
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| 239 |
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// 01313000 01312d00 + 01312d00
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| 240 |
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// 01313000 02625A00
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| 241 |
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// 00000000 01312A00
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| 242 |
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// ....
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| 243 |
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| 244 |
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if (clock >= onesec)
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| 245 |
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{
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| 246 |
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onesec = onesec + 20000000 - clock;
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| 247 |
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clock = 0;
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| 248 |
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countup = 1;
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| 249 |
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}
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| 250 |
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clock = clock + 4096;
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| 251 |
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}
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| 252 |
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| 253 |
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//============
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| 254 |
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// NMI Handler
|
| 255 |
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//============
|
| 256 |
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void nmi_handler(void)
|
| 257 |
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{
|
| 258 |
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}
|
| 259 |
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| 260 |
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//=============
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| 261 |
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// TRAP Handler
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| 262 |
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//=============
|
| 263 |
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void trap_handler(void)
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| 264 |
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{
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| 265 |
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}
|
| 266 |
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| 267 |
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//====================
|
| 268 |
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// Illegal Instruction
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| 269 |
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//====================
|
| 270 |
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void illegal(void)
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| 271 |
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{
|
| 272 |
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}
|
| 273 |
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| 274 |
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//==============
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| 275 |
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// Address Error
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| 276 |
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//==============
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| 277 |
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void error(void)
|
| 278 |
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{
|
| 279 |
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}
|
| 280 |
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| 281 |
|
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//=============
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| 282 |
|
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// Main Routine
|
| 283 |
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//=============
|
| 284 |
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void main_sh(void)
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| 285 |
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{
|
| 286 |
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unsigned char key;
|
| 287 |
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|
| 288 |
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//-----------
|
| 289 |
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// Initialize
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| 290 |
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//-----------
|
| 291 |
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key_wait_off();
|
| 292 |
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lcd_init();
|
| 293 |
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lcd_message(0, mes_welcome);
|
| 294 |
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| 295 |
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hour = 0;
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| 296 |
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min = 0;
|
| 297 |
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sec = 0;
|
| 298 |
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clock = 0;
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| 299 |
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onesec = 20000000;
|
| 300 |
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countup = 0;
|
| 301 |
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| 302 |
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disp_time();
|
| 303 |
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int_timer(1);
|
| 304 |
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|
| 305 |
|
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//----------------
|
| 306 |
|
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// Main Event Loop
|
| 307 |
|
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//----------------
|
| 308 |
|
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while(1)
|
| 309 |
|
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{
|
| 310 |
|
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if (countup)
|
| 311 |
|
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{
|
| 312 |
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countup = 0;
|
| 313 |
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|
| 314 |
|
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sec = sec + 1;
|
| 315 |
|
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if ((sec % 16) >= 10) sec = sec + 6;
|
| 316 |
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if (sec >= 0x60) sec = 0;
|
| 317 |
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|
| 318 |
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if (sec == 0) min = min + 1;
|
| 319 |
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if ((min % 16) >= 10) min = min + 6;
|
| 320 |
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if (min >= 0x60) min = 0;
|
| 321 |
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|
| 322 |
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if ((sec == 0) & (min == 0)) hour = hour + 1;
|
| 323 |
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if ((hour % 16) >= 10) hour = hour + 6;
|
| 324 |
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if (hour >= 0x24) hour = 0;
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| 325 |
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| 326 |
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disp_time();
|
| 327 |
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}
|
| 328 |
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| 329 |
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//----------------
|
| 330 |
|
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// Adjust Function
|
| 331 |
|
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//----------------
|
| 332 |
|
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if (key_scan() == KEYDAT)
|
| 333 |
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{
|
| 334 |
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waitNms(4);
|
| 335 |
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int_timer(0);
|
| 336 |
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|
| 337 |
|
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lcd_message(0, mes_hour);
|
| 338 |
|
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do
|
| 339 |
|
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{
|
| 340 |
|
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key = command(&hour);
|
| 341 |
|
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} while (hour >= 0x24);
|
| 342 |
|
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disp_time();
|
| 343 |
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|
| 344 |
|
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lcd_message(0, mes_min);
|
| 345 |
|
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do
|
| 346 |
|
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{
|
| 347 |
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key = command(&min);
|
| 348 |
|
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} while (min >= 0x60);
|
| 349 |
|
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disp_time();
|
| 350 |
|
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|
| 351 |
|
|
lcd_message(0, mes_sec);
|
| 352 |
|
|
do
|
| 353 |
|
|
{
|
| 354 |
|
|
key = command(&sec);
|
| 355 |
|
|
} while (sec >= 0x60);
|
| 356 |
|
|
disp_time();
|
| 357 |
|
|
|
| 358 |
|
|
lcd_message(0, mes_welcome);
|
| 359 |
|
|
|
| 360 |
|
|
key_wait_off();
|
| 361 |
|
|
|
| 362 |
|
|
clock = 0;
|
| 363 |
|
|
onesec = 20000000;
|
| 364 |
|
|
countup = 0;
|
| 365 |
|
|
int_timer(1);
|
| 366 |
|
|
}
|
| 367 |
|
|
}
|
| 368 |
|
|
}
|
| 369 |
|
|
|
| 370 |
|
|
//****************************************************
|
| 371 |
|
|
//* *
|
| 372 |
|
|
//* Service Utilities *
|
| 373 |
|
|
//* *
|
| 374 |
|
|
//****************************************************
|
| 375 |
|
|
|
| 376 |
|
|
//==================
|
| 377 |
|
|
// Display Time
|
| 378 |
|
|
//------------------
|
| 379 |
|
|
// Input : none
|
| 380 |
|
|
// Output : none
|
| 381 |
|
|
//==================
|
| 382 |
|
|
void disp_time(void)
|
| 383 |
|
|
{
|
| 384 |
|
|
lcd_message(16, mes_time);
|
| 385 |
|
|
lcd_disp_char(hour);
|
| 386 |
|
|
lcd_disp(':');
|
| 387 |
|
|
lcd_disp_char(min);
|
| 388 |
|
|
lcd_disp(':');
|
| 389 |
|
|
lcd_disp_char(sec);
|
| 390 |
|
|
}
|
| 391 |
|
|
|
| 392 |
|
|
//========================================
|
| 393 |
|
|
// Interrupt Timer ON/OFF
|
| 394 |
|
|
//----------------------------------------
|
| 395 |
|
|
// Input : onoff = timer on(1)/off(0)
|
| 396 |
|
|
// Output : none
|
| 397 |
|
|
//========================================
|
| 398 |
|
|
void int_timer(int onoff)
|
| 399 |
|
|
{
|
| 400 |
|
|
if (onoff)
|
| 401 |
|
|
SYS.INTCTL = 0x02140fff;
|
| 402 |
|
|
else
|
| 403 |
|
|
SYS.INTCTL = 0x00040fff;
|
| 404 |
|
|
}
|
| 405 |
|
|
|
| 406 |
|
|
//=========================================
|
| 407 |
|
|
// Command Handler
|
| 408 |
|
|
//-----------------------------------------
|
| 409 |
|
|
// Input : data = display char
|
| 410 |
|
|
// Output : command = input command
|
| 411 |
|
|
// data = input integer
|
| 412 |
|
|
//=========================================
|
| 413 |
|
|
unsigned char command(unsigned char *data)
|
| 414 |
|
|
{
|
| 415 |
|
|
unsigned char key;
|
| 416 |
|
|
int i;
|
| 417 |
|
|
|
| 418 |
|
|
lcd_pos(14);
|
| 419 |
|
|
lcd_disp_char(*data);
|
| 420 |
|
|
|
| 421 |
|
|
lcd_cursor(1);
|
| 422 |
|
|
i = 0;
|
| 423 |
|
|
|
| 424 |
|
|
do
|
| 425 |
|
|
{
|
| 426 |
|
|
if (i == 0) lcd_pos(14);
|
| 427 |
|
|
|
| 428 |
|
|
key_wait_off();
|
| 429 |
|
|
key = key_wait_on();
|
| 430 |
|
|
if (key <= KEY9)
|
| 431 |
|
|
{
|
| 432 |
|
|
lcd_disp(hex2asc(key));
|
| 433 |
|
|
*data = (*data & ~((0x0F) << ((1-i) * 4))) | (key << ((1-i) * 4));
|
| 434 |
|
|
i = (i + 1) % 2;
|
| 435 |
|
|
}
|
| 436 |
|
|
} while (key != KEYDAT);
|
| 437 |
|
|
|
| 438 |
|
|
lcd_cursor(0);
|
| 439 |
|
|
return(key);
|
| 440 |
|
|
}
|
| 441 |
|
|
|
| 442 |
|
|
//=============================
|
| 443 |
|
|
// Convert Hex(nibble) to Ascii
|
| 444 |
|
|
//-----------------------------
|
| 445 |
|
|
// Input : hex (0x00-0x0F)
|
| 446 |
|
|
// Output : hex2asc
|
| 447 |
|
|
//=============================
|
| 448 |
|
|
unsigned char hex2asc(unsigned char hex)
|
| 449 |
|
|
{
|
| 450 |
|
|
hex = hex & 0x0f;
|
| 451 |
|
|
if (hex <= 0x09)
|
| 452 |
|
|
return(hex + '0');
|
| 453 |
|
|
else
|
| 454 |
|
|
return(hex - 0x0a + 'A');
|
| 455 |
|
|
}
|
| 456 |
|
|
|
| 457 |
|
|
//=============================
|
| 458 |
|
|
// Convert Ascii to Hex(nibble)
|
| 459 |
|
|
//-----------------------------
|
| 460 |
|
|
// Input : asc(0-9, A-F)
|
| 461 |
|
|
// Output : asc2hex
|
| 462 |
|
|
//=============================
|
| 463 |
|
|
unsigned char asc2hex(unsigned char asc)
|
| 464 |
|
|
{
|
| 465 |
|
|
if (asc <= '9')
|
| 466 |
|
|
return((asc - '0') & 0x0f);
|
| 467 |
|
|
else
|
| 468 |
|
|
return((asc - 'A' + 0x0a) & 0x0f);
|
| 469 |
|
|
}
|
| 470 |
|
|
|
| 471 |
|
|
//****************************************************
|
| 472 |
|
|
//* *
|
| 473 |
|
|
//* Key Utilities *
|
| 474 |
|
|
//* *
|
| 475 |
|
|
//****************************************************
|
| 476 |
|
|
|
| 477 |
|
|
//===================================
|
| 478 |
|
|
// Wait until Key On
|
| 479 |
|
|
//-----------------------------------
|
| 480 |
|
|
// Input : none
|
| 481 |
|
|
// Output : key = pushed key code
|
| 482 |
|
|
//===================================
|
| 483 |
|
|
unsigned char key_wait_on(void)
|
| 484 |
|
|
{
|
| 485 |
|
|
unsigned char key;
|
| 486 |
|
|
|
| 487 |
|
|
while((key = key_scan()) == KEYNONE) waitNms(4);
|
| 488 |
|
|
|
| 489 |
|
|
return(key);
|
| 490 |
|
|
}
|
| 491 |
|
|
|
| 492 |
|
|
//===================
|
| 493 |
|
|
// Wait until Key Off
|
| 494 |
|
|
//-------------------
|
| 495 |
|
|
// Input : none
|
| 496 |
|
|
// Output : none
|
| 497 |
|
|
//===================
|
| 498 |
|
|
void key_wait_off(void)
|
| 499 |
|
|
{
|
| 500 |
|
|
while(key_scan() != KEYNONE) waitNms(4);
|
| 501 |
|
|
}
|
| 502 |
|
|
|
| 503 |
|
|
//===================================
|
| 504 |
|
|
// Key Scan
|
| 505 |
|
|
//-----------------------------------
|
| 506 |
|
|
// Input : none
|
| 507 |
|
|
// Output : key = pushed key code
|
| 508 |
|
|
//===================================
|
| 509 |
|
|
unsigned char key_scan()
|
| 510 |
|
|
{
|
| 511 |
|
|
unsigned char keyx4;
|
| 512 |
|
|
unsigned char keyx3;
|
| 513 |
|
|
unsigned char keyx2;
|
| 514 |
|
|
unsigned char keyx1;
|
| 515 |
|
|
unsigned char keyx0;
|
| 516 |
|
|
|
| 517 |
|
|
PORTO.KEYYO.BYTE = 0xef; // KEYY4
|
| 518 |
|
|
waitNms(1);
|
| 519 |
|
|
keyx4 = PORTI.KEYXI.BYTE & 0x1f;
|
| 520 |
|
|
|
| 521 |
|
|
PORTO.KEYYO.BYTE = 0xf7; // KEYY3
|
| 522 |
|
|
waitNms(1);
|
| 523 |
|
|
keyx3 = PORTI.KEYXI.BYTE & 0x1f;
|
| 524 |
|
|
|
| 525 |
|
|
PORTO.KEYYO.BYTE = 0xfb; // KEYY2
|
| 526 |
|
|
waitNms(1);
|
| 527 |
|
|
keyx2 = PORTI.KEYXI.BYTE & 0x1f;
|
| 528 |
|
|
|
| 529 |
|
|
PORTO.KEYYO.BYTE = 0xfd; // KEYY1
|
| 530 |
|
|
waitNms(1);
|
| 531 |
|
|
keyx1 = PORTI.KEYXI.BYTE & 0x1f;
|
| 532 |
|
|
|
| 533 |
|
|
PORTO.KEYYO.BYTE = 0xfe; // KEYY0
|
| 534 |
|
|
waitNms(1);
|
| 535 |
|
|
keyx0 = PORTI.KEYXI.BYTE & 0x1f;
|
| 536 |
|
|
|
| 537 |
|
|
switch(keyx4)
|
| 538 |
|
|
{
|
| 539 |
|
|
case 0x17 : return(KEYPUT);
|
| 540 |
|
|
case 0x1b : return(KEYGET);
|
| 541 |
|
|
case 0x1d : return(KEYRUN);
|
| 542 |
|
|
case 0x1e : return(KEYUTL);
|
| 543 |
|
|
}
|
| 544 |
|
|
switch(keyx3)
|
| 545 |
|
|
{
|
| 546 |
|
|
case 0x0f : return(KEYADR);
|
| 547 |
|
|
case 0x17 : return(KEYF);
|
| 548 |
|
|
case 0x1b : return(KEYE);
|
| 549 |
|
|
case 0x1d : return(KEYD);
|
| 550 |
|
|
case 0x1e : return(KEYC);
|
| 551 |
|
|
}
|
| 552 |
|
|
switch(keyx2)
|
| 553 |
|
|
{
|
| 554 |
|
|
case 0x0f : return(KEYINC);
|
| 555 |
|
|
case 0x17 : return(KEYB);
|
| 556 |
|
|
case 0x1b : return(KEYA);
|
| 557 |
|
|
case 0x1d : return(KEY9);
|
| 558 |
|
|
case 0x1e : return(KEY8);
|
| 559 |
|
|
}
|
| 560 |
|
|
switch(keyx1)
|
| 561 |
|
|
{
|
| 562 |
|
|
case 0x0f : return(KEYDEC);
|
| 563 |
|
|
case 0x17 : return(KEY7);
|
| 564 |
|
|
case 0x1b : return(KEY6);
|
| 565 |
|
|
case 0x1d : return(KEY5);
|
| 566 |
|
|
case 0x1e : return(KEY4);
|
| 567 |
|
|
}
|
| 568 |
|
|
switch(keyx0)
|
| 569 |
|
|
{
|
| 570 |
|
|
case 0x0f : return(KEYDAT);
|
| 571 |
|
|
case 0x17 : return(KEY3);
|
| 572 |
|
|
case 0x1b : return(KEY2);
|
| 573 |
|
|
case 0x1d : return(KEY1);
|
| 574 |
|
|
case 0x1e : return(KEY0);
|
| 575 |
|
|
}
|
| 576 |
|
|
return(KEYNONE);
|
| 577 |
|
|
}
|
| 578 |
|
|
|
| 579 |
|
|
//==================
|
| 580 |
|
|
// Wait n ms
|
| 581 |
|
|
//------------------
|
| 582 |
|
|
// Input : n ms
|
| 583 |
|
|
// Output : none
|
| 584 |
|
|
//==================
|
| 585 |
|
|
void waitNms(unsigned char n)
|
| 586 |
|
|
{
|
| 587 |
|
|
int i, j;
|
| 588 |
|
|
unsigned char dummy;
|
| 589 |
|
|
|
| 590 |
|
|
for (i = 0 ; i < n ; i++)
|
| 591 |
|
|
{
|
| 592 |
|
|
// 1ms = 20000 * 50ns (20MHz)
|
| 593 |
|
|
for (j = 0 ; i <= 10000 ; i++) dummy = PORTI.RESERVED_0;
|
| 594 |
|
|
}
|
| 595 |
|
|
}
|
| 596 |
|
|
|
| 597 |
|
|
//****************************************************
|
| 598 |
|
|
//* *
|
| 599 |
|
|
//* LCD Utilities *
|
| 600 |
|
|
//* *
|
| 601 |
|
|
//****************************************************
|
| 602 |
|
|
|
| 603 |
|
|
//======================================
|
| 604 |
|
|
// LCD Display Char Hex data (2 digit)
|
| 605 |
|
|
//--------------------------------------
|
| 606 |
|
|
// Input : data = display char data
|
| 607 |
|
|
// Output : none
|
| 608 |
|
|
//======================================
|
| 609 |
|
|
void lcd_disp_char(unsigned char data)
|
| 610 |
|
|
{
|
| 611 |
|
|
int i;
|
| 612 |
|
|
unsigned char digit;
|
| 613 |
|
|
|
| 614 |
|
|
for (i = 1 ; i >= 0 ; i--)
|
| 615 |
|
|
{
|
| 616 |
|
|
digit = (unsigned char) (data / (1 << i * 4)) % 0x10;
|
| 617 |
|
|
lcd_disp(hex2asc(digit));
|
| 618 |
|
|
}
|
| 619 |
|
|
}
|
| 620 |
|
|
|
| 621 |
|
|
//======================================
|
| 622 |
|
|
// LCD Display Long Hex data (8 digit)
|
| 623 |
|
|
//--------------------------------------
|
| 624 |
|
|
// Input : data = display long data
|
| 625 |
|
|
// Output : none
|
| 626 |
|
|
//======================================
|
| 627 |
|
|
void lcd_disp_long(unsigned long data)
|
| 628 |
|
|
{
|
| 629 |
|
|
int i;
|
| 630 |
|
|
unsigned char digit;
|
| 631 |
|
|
|
| 632 |
|
|
for (i = 7 ; i >= 0 ; i--)
|
| 633 |
|
|
{
|
| 634 |
|
|
digit = (unsigned char) (data / (1 << i * 4)) % 0x10;
|
| 635 |
|
|
lcd_disp(hex2asc(digit));
|
| 636 |
|
|
}
|
| 637 |
|
|
}
|
| 638 |
|
|
|
| 639 |
|
|
//================================
|
| 640 |
|
|
// Cursor On/Off
|
| 641 |
|
|
//--------------------------------
|
| 642 |
|
|
// Input : cur = off(0)/on(1)
|
| 643 |
|
|
// Output : none
|
| 644 |
|
|
//================================
|
| 645 |
|
|
void lcd_cursor(unsigned char con)
|
| 646 |
|
|
{
|
| 647 |
|
|
lcd_ready();
|
| 648 |
|
|
if (con)
|
| 649 |
|
|
lcd_wr(INST, 0x0d);
|
| 650 |
|
|
else
|
| 651 |
|
|
lcd_wr(INST, 0x0c);
|
| 652 |
|
|
}
|
| 653 |
|
|
|
| 654 |
|
|
|
| 655 |
|
|
//===============================
|
| 656 |
|
|
// Erase 1 line from the position
|
| 657 |
|
|
//-------------------------------
|
| 658 |
|
|
// Input : pos = position
|
| 659 |
|
|
// 1st line = 00-15
|
| 660 |
|
|
// 2nd line = 16-31
|
| 661 |
|
|
// Ouput : none
|
| 662 |
|
|
//===============================
|
| 663 |
|
|
void lcd_erase(unsigned char pos)
|
| 664 |
|
|
{
|
| 665 |
|
|
int i;
|
| 666 |
|
|
|
| 667 |
|
|
lcd_pos(pos);
|
| 668 |
|
|
for (i = 0; i < 16; i++) lcd_disp(' ');
|
| 669 |
|
|
}
|
| 670 |
|
|
|
| 671 |
|
|
//========================================
|
| 672 |
|
|
// Print a Message from Current Position
|
| 673 |
|
|
//----------------------------------------
|
| 674 |
|
|
// Input : pstr = message top address
|
| 675 |
|
|
// Outpur : none
|
| 676 |
|
|
//========================================
|
| 677 |
|
|
void lcd_message(unsigned char pos, unsigned char *pstr)
|
| 678 |
|
|
{
|
| 679 |
|
|
unsigned char *pmessage;
|
| 680 |
|
|
|
| 681 |
|
|
lcd_pos(pos);
|
| 682 |
|
|
pmessage = pstr;
|
| 683 |
|
|
while (*pmessage) lcd_disp(*pmessage++);
|
| 684 |
|
|
}
|
| 685 |
|
|
|
| 686 |
|
|
//==========================================
|
| 687 |
|
|
// Display One Character on Current Position
|
| 688 |
|
|
//------------------------------------------
|
| 689 |
|
|
// Input : chr = display charcter
|
| 690 |
|
|
// Output : none
|
| 691 |
|
|
//==========================================
|
| 692 |
|
|
void lcd_disp(unsigned char chr)
|
| 693 |
|
|
{
|
| 694 |
|
|
lcd_ready();
|
| 695 |
|
|
lcd_wr(DATA, chr);
|
| 696 |
|
|
}
|
| 697 |
|
|
|
| 698 |
|
|
//================================
|
| 699 |
|
|
// Set LCD Display Position
|
| 700 |
|
|
//--------------------------------
|
| 701 |
|
|
// Input : pos = position
|
| 702 |
|
|
// 1st line = 00-15
|
| 703 |
|
|
// 2nd line = 16-31
|
| 704 |
|
|
// Ouput : none
|
| 705 |
|
|
//================================
|
| 706 |
|
|
void lcd_pos(unsigned char pos)
|
| 707 |
|
|
{
|
| 708 |
|
|
unsigned char phypos;
|
| 709 |
|
|
|
| 710 |
|
|
phypos = pos % 32;
|
| 711 |
|
|
if (phypos >= 16)
|
| 712 |
|
|
phypos = (phypos - 16) + 64;
|
| 713 |
|
|
phypos = phypos | 0x80;
|
| 714 |
|
|
|
| 715 |
|
|
lcd_ready();
|
| 716 |
|
|
lcd_wr(INST, phypos);
|
| 717 |
|
|
}
|
| 718 |
|
|
|
| 719 |
|
|
//=====================
|
| 720 |
|
|
// Wait until LCD ready
|
| 721 |
|
|
//---------------------
|
| 722 |
|
|
// Input : none
|
| 723 |
|
|
// Output : none
|
| 724 |
|
|
//=====================
|
| 725 |
|
|
void lcd_ready(void)
|
| 726 |
|
|
{
|
| 727 |
|
|
while ((lcd_rd(INST) & 0x80) == 0x80);
|
| 728 |
|
|
}
|
| 729 |
|
|
|
| 730 |
|
|
//=================================
|
| 731 |
|
|
// LCD Read
|
| 732 |
|
|
//---------------------------------
|
| 733 |
|
|
// Input : rs (0=Instr,1=Data)
|
| 734 |
|
|
// Output : lcd_rd (Read Data)
|
| 735 |
|
|
//=================================
|
| 736 |
|
|
unsigned char lcd_rd(int rs)
|
| 737 |
|
|
{
|
| 738 |
|
|
int i;
|
| 739 |
|
|
unsigned char dummy;
|
| 740 |
|
|
unsigned char data;
|
| 741 |
|
|
|
| 742 |
|
|
PORTO.LCDCON.BYTE = 0x02 | (rs & 0x01);
|
| 743 |
|
|
|
| 744 |
|
|
// wait 60ns = 2cyc@20MHz
|
| 745 |
|
|
dummy = PORTI.RESERVED_0;
|
| 746 |
|
|
dummy = PORTI.RESERVED_0;
|
| 747 |
|
|
|
| 748 |
|
|
|
| 749 |
|
|
PORTO.LCDCON.BYTE = 0x06 | (rs & 0x01);
|
| 750 |
|
|
|
| 751 |
|
|
// wait 500ns = 10cyc@20MHz
|
| 752 |
|
|
for (i = 0 ; i <= 10 ; i++) dummy = PORTI.RESERVED_0;
|
| 753 |
|
|
|
| 754 |
|
|
data = PORTI.LCDIN;
|
| 755 |
|
|
|
| 756 |
|
|
PORTO.LCDCON.BYTE = 0x02 | (rs & 0x01);
|
| 757 |
|
|
|
| 758 |
|
|
// wait 500ns = 10cyc@20MHz
|
| 759 |
|
|
for (i = 0 ; i <= 10 ; i++) dummy = PORTI.RESERVED_0;
|
| 760 |
|
|
|
| 761 |
|
|
return(data);
|
| 762 |
|
|
}
|
| 763 |
|
|
|
| 764 |
|
|
//=================================
|
| 765 |
|
|
// LCD Write
|
| 766 |
|
|
//---------------------------------
|
| 767 |
|
|
// Input : rs (0=Instr,1=Data)
|
| 768 |
|
|
// wd (Write Data)
|
| 769 |
|
|
// Output : none
|
| 770 |
|
|
//=================================
|
| 771 |
|
|
void lcd_wr(int rs, unsigned char wd)
|
| 772 |
|
|
{
|
| 773 |
|
|
int i;
|
| 774 |
|
|
unsigned char dummy;
|
| 775 |
|
|
|
| 776 |
|
|
PORTO.LCDOUT = wd;
|
| 777 |
|
|
|
| 778 |
|
|
PORTO.LCDCON.BYTE = 0x00 | (rs & 0x01);
|
| 779 |
|
|
|
| 780 |
|
|
// wait 60ns = 2cyc@20MHz
|
| 781 |
|
|
dummy = PORTI.RESERVED_0;
|
| 782 |
|
|
dummy = PORTI.RESERVED_0;
|
| 783 |
|
|
|
| 784 |
|
|
PORTO.LCDCON.BYTE = 0x04 | (rs & 0x01);
|
| 785 |
|
|
|
| 786 |
|
|
// wait 500ns = 10cyc@20MHz
|
| 787 |
|
|
for (i = 0 ; i <= 10 ; i++) dummy = PORTI.RESERVED_0;
|
| 788 |
|
|
|
| 789 |
|
|
PORTO.LCDCON.BYTE = 0x00 | (rs & 0x01);
|
| 790 |
|
|
|
| 791 |
|
|
// wait 500ns = 10cyc@20MHz
|
| 792 |
|
|
for (i = 0 ; i <= 10 ; i++) dummy = PORTI.RESERVED_0;
|
| 793 |
|
|
}
|
| 794 |
|
|
|
| 795 |
|
|
//==================
|
| 796 |
|
|
// LCD Initialize
|
| 797 |
|
|
//------------------
|
| 798 |
|
|
// Input : none
|
| 799 |
|
|
// Output : none
|
| 800 |
|
|
//==================
|
| 801 |
|
|
void lcd_init(void)
|
| 802 |
|
|
{
|
| 803 |
|
|
int i;
|
| 804 |
|
|
unsigned char dummy;
|
| 805 |
|
|
|
| 806 |
|
|
lcd_wr(INST, 0x30);
|
| 807 |
|
|
|
| 808 |
|
|
// wait 4100us=82000cyc@20MHz
|
| 809 |
|
|
for (i = 0 ; i < 82000 ; i++) dummy = PORTI.RESERVED_0;
|
| 810 |
|
|
|
| 811 |
|
|
lcd_wr(INST, 0x30);
|
| 812 |
|
|
|
| 813 |
|
|
// wait 100us=2000cyc@20MHz
|
| 814 |
|
|
for (i = 0 ; i < 2000 ; i++) dummy = PORTI.RESERVED_0;
|
| 815 |
|
|
|
| 816 |
|
|
lcd_wr(INST, 0x30);
|
| 817 |
|
|
|
| 818 |
|
|
// set function (8bit, 2lines)
|
| 819 |
|
|
lcd_ready();
|
| 820 |
|
|
lcd_wr(INST, 0x38);
|
| 821 |
|
|
|
| 822 |
|
|
// display (disp on, cursor off, blink off)
|
| 823 |
|
|
lcd_ready();
|
| 824 |
|
|
lcd_wr(INST, 0x0c);
|
| 825 |
|
|
|
| 826 |
|
|
// clear
|
| 827 |
|
|
lcd_ready();
|
| 828 |
|
|
lcd_wr(INST, 0x01);
|
| 829 |
|
|
|
| 830 |
|
|
// entry mode (increment, no-shift)
|
| 831 |
|
|
lcd_ready();
|
| 832 |
|
|
lcd_wr(INST, 0x06);
|
| 833 |
|
|
}
|
| 834 |
|
|
|
| 835 |
|
|
//===============
|
| 836 |
|
|
// End of Program
|
| 837 |
|
|
//===============
|
