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olivier.gi |
#----------------------------------------------------------------------------------
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# Copyright (C) 2001 Authors
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#
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# This source file may be used and distributed without restriction provided
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# that this copyright statement is not removed from the file and that any
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# derivative work contains the original copyright notice and the associated
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# disclaimer.
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#
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# This source file is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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#
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# This source is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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# License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with this source; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#
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#----------------------------------------------------------------------------------
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#
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# File Name: dbg_uart_i2c-iss.tcl
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#
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# Author(s):
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# - Olivier Girard, olgirard@gmail.com
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#
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#----------------------------------------------------------------------------------
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# $Rev: 133 $
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# $LastChangedBy: olivier.girard $
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# $LastChangedDate: 2012-03-22 21:28:26 +0100 (Thu, 22 Mar 2012) $
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#----------------------------------------------------------------------------------
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#
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# Description:
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#
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# Some I2C utility functions for the openMSP430 serial debug interface
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# using the USB-ISS adapter.
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#
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# Mandatory Public functions:
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#
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# - i2c_usb-iss::dbg_open (Device, OperatingMode)
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# - i2c_usb-iss::dbg_connect (CpuAddr)
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# - i2c_usb-iss::dbg_rd (CpuAddr, RegisterName)
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# - i2c_usb-iss::dbg_wr (CpuAddr, RegisterName, Data)
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# - i2c_usb-iss::dbg_burst_rx (CpuAddr, Format, Length)
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# - i2c_usb-iss::dbg_burst_tx (CpuAddr, Format, DataList)
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# - i2c_usb-iss::get_allowed_speeds ()
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#
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#
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# Private functions:
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#
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# - i2c_usb-iss::i2c_mode (OperatingMode)
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# - i2c_usb-iss::dbg_format_cmd (RegisterName, Action)
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# - i2c_usb-iss::ISS_VERSION ()
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# - i2c_usb-iss::GET_SER_NUM ()
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# - i2c_usb-iss::ISS_MODE (OperatingMode)
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# - i2c_usb-iss::SETPINS (IO1, IO2, IO3, IO4)
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# - i2c_usb-iss::GETPINS ()
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#
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#----------------------------------------------------------------------------------
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namespace eval i2c_usb-iss {
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#=============================================================================#
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# Source required libraries #
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#=============================================================================#
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set scriptDir [file dirname [info script]]
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source $scriptDir/dbg_utils.tcl
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#=============================================================================#
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# i2c_usb-iss::dbg_open (Device, Baudrate) #
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#-----------------------------------------------------------------------------#
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# Description: Open and configure the UART connection. #
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# Attach and configure the USB-ISS adapter. #
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# Arguments : Device - Serial port device (i.e. /dev/ttyS0 or COM2:) #
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# OperatingMode - Name of the I2C operating mode. #
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# Result : 0 if error, 1 otherwise. #
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#=============================================================================#
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proc dbg_open {Device OperatingMode} {
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# Open UART interface
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if {![utils::uart_open $Device 0 115200]} {
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return 0
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}
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# Check the ISS-VERSION command on the adapter
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if {[lindex [ISS_VERSION] 0]=="0"} {
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return 0
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}
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# Get operating mode value
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set op_mode [i2c_mode $OperatingMode]
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# Configure the USB-ISS adaptor for I2C communication
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# IO_MODE+I2C IO_TYPE
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if {![ISS_MODE [list $op_mode 0x00]]} {
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return 0
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}
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# Clear IO pins to make sure the Serial debug interface is under reset
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SETPINS 0 0 0 0
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after 100
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return 1
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}
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#=============================================================================#
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# i2c_usb-iss::dbg_connect (CpuAddr) #
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#-----------------------------------------------------------------------------#
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# Description: In case the serial debug interface enable signal is connected #
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# to the I/O 1 or I/O 2 port, this function will enable it. #
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# Arguments : CpuAddr - Unused argument. #
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# Result : 0 if error, 1 otherwise. #
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#=============================================================================#
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proc dbg_connect {CpuAddr} {
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# Make sure the Serial debug interface is still under reset
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SETPINS 0 0 0 0
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after 100
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# Enable the Serial debug interface
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SETPINS 1 1 1 1
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after 100
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return 1
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}
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#=============================================================================#
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# i2c_usb-iss::dbg_rd (CpuAddr, RegisterName) #
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#-----------------------------------------------------------------------------#
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# Description: Read the specified debug register. #
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# Arguments : CpuAddr - I2C address of the target CPU. #
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# RegisterName - Name of the register to be read. #
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# Result : Register content, in hexadecimal. #
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#=============================================================================#
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proc dbg_rd {CpuAddr RegisterName} {
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# Send command frame
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set cmd [dbg_format_cmd $RegisterName RD]
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# Word or Byte register
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set isByte [string eq [expr 0x40 & $cmd] 64]
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# Compute device frame (address+WR/RD)
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set DeviceFrameWR [format "0x%02x" [expr $CpuAddr*2+0]]
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set DeviceFrameRD [format "0x%02x" [expr $CpuAddr*2+1]]
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# Send command frame: I2C_DIRECT I2C_START I2C_WRITE2 DEVICE_ADDRESS+WR DATA STOP
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utils::uart_tx [concat 0x57 0x01 0x31 $DeviceFrameWR $cmd 0x03]
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set response [utils::uart_rx 1 2]
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if {[lindex $response 0] == 0x00} {
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puts "I2C ERROR: $response"
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return "0x"
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}
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if {$isByte} {
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# Read data: I2C_DIRECT I2C_START I2C_WRITE1 DEVICE_ADDRESS+RD NACK READ1 STOP
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utils::uart_tx [concat 0x57 0x01 0x30 $DeviceFrameRD 0x04 0x20 0x03]
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} else {
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# Read data: I2C_DIRECT I2C_START I2C_WRITE1 DEVICE_ADDRESS+RD READ1 NACK READ1 STOP
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utils::uart_tx [concat 0x57 0x01 0x30 $DeviceFrameRD 0x20 0x04 0x20 0x03]
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}
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set response [utils::uart_rx 1 2]
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if {[lindex $response 0] == 0x00} {
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puts "I2C ERROR: $response"
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return "0x"
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}
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# Compute size of data to be received
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if {$isByte} {
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set format 1
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set length 1
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} else {
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set format 0
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set length 2
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}
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# Receive data
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set rx_data [utils::uart_rx $format [expr $length]]
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return $rx_data
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}
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#=============================================================================#
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# i2c_usb-iss::dbg_wr (CpuAddr, RegisterName, Data) #
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#-----------------------------------------------------------------------------#
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# Description: Write to the specified debug register. #
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# Arguments : CpuAddr - I2C address of the target CPU. #
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# RegisterName - Name of the register to be written. #
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# Data - Data to be written. #
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# Result : 0 if error, 1 otherwise. #
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#=============================================================================#
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proc dbg_wr {CpuAddr RegisterName Data} {
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# Send command frame
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set cmd [dbg_format_cmd $RegisterName WR]
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# Word or Byte register
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set isByte [string eq [expr 0x40 & $cmd] 64]
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# Compute device frame (address+WR/RD)
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set DeviceFrameWR [format "0x%02x" [expr $CpuAddr*2+0]]
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set DeviceFrameRD [format "0x%02x" [expr $CpuAddr*2+1]]
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# Send command frame: I2C_DIRECT I2C_START I2C_WRITE2 DEVICE_ADDRESS+WR DATA STOP
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utils::uart_tx [concat 0x57 0x01 0x31 $DeviceFrameWR $cmd 0x03]
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set response [utils::uart_rx 1 2]
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if {[lindex $response 0] == 0x00} {
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puts "I2C ERROR: $response"
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return 0
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}
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# Format input data
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if {![regexp {0x} $Data match]} {
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set Data [format "0x%x" $Data]
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}
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set hex_val [format %04x $Data]
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regexp {(..)(..)} $hex_val match hex_msb hex_lsb
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if {$isByte} {
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# Read data: I2C_DIRECT I2C_START I2C_WRITE2 DEVICE_ADDRESS+WR DATA STOP
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utils::uart_tx [concat 0x57 0x01 0x31 $DeviceFrameWR "0x$hex_lsb" 0x03]
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} else {
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# Read data: I2C_DIRECT I2C_START I2C_WRITE1 DEVICE_ADDRESS+WR DATA_LSB DATA_MSB STOP
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utils::uart_tx [concat 0x57 0x01 0x32 $DeviceFrameWR "0x$hex_lsb" "0x$hex_msb" 0x03]
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}
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set response [utils::uart_rx 1 2]
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if {[lindex $response 0] == 0x00} {
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puts "I2C ERROR: $response"
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return 0
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}
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return 1
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}
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#=============================================================================#
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# i2c_usb-iss::dbg_burst_rx (CpuAddr, Format, Length) #
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#-----------------------------------------------------------------------------#
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# Description: Receive data list as burst from the serial debug interface. #
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# Arguments : CpuAddr - I2C address of the target CPU. #
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# Format - 0 format as 16 bit word, 1 format as 8 bit word. #
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# Length - Number of byte to be received. #
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# Result : 0 if error, 1 otherwise. #
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#=============================================================================#
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proc dbg_burst_rx {CpuAddr Format Length} {
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# Compute device frame (address+WR/RD)
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set DeviceFrameWR [format "0x%02x" [expr $CpuAddr*2+0]]
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set DeviceFrameRD [format "0x%02x" [expr $CpuAddr*2+1]]
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set rx_data ""
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while { $Length > 0 } {
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# Maximum frame length is 16 bytes
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if {$Length >= 16} {set rxLength 16
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} else {set rxLength $Length}
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# Compute I2C read command
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set readCmd [format "0x%x" [expr $rxLength + 0x1f - 1]]
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if {$readCmd == "0x1f"} {
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# Read data: I2C_DIRECT I2C_START I2C_WRITE1 DEVICE_ADDRESS+RD NACK READ1 STOP
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utils::uart_tx [concat 0x57 0x01 0x30 $DeviceFrameRD 0x04 0x20 0x03]
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} else {
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# Read data: I2C_DIRECT I2C_START I2C_WRITE1 DEVICE_ADDRESS+RD READxx NACK READ1 STOP
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utils::uart_tx [concat 0x57 0x01 0x30 $DeviceFrameRD $readCmd 0x04 0x20 0x03]
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}
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set response [utils::uart_rx 1 2]
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if {[lindex $response 0] == 0x00} {
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puts "I2C ERROR: $response"
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return 0
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}
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# Receive data
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set rx_data [concat $rx_data [utils::uart_rx $Format [expr $rxLength]]]
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# Remaining bytes to be received
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set Length [expr $Length - $rxLength]
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| 287 |
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}
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| 288 |
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return $rx_data
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| 290 |
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}
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| 291 |
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| 293 |
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#=============================================================================#
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| 294 |
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# i2c_usb-iss::dbg_burst_tx (CpuAddr, Format, DataList) #
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| 295 |
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#-----------------------------------------------------------------------------#
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| 296 |
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# Description: Transmit data list as burst to the serial debug interface. #
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| 297 |
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# Arguments : CpuAddr - I2C address of the target CPU. #
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| 298 |
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# Format - 0 format as 16 bit word, 1 format as 8 bit word. #
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| 299 |
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# DataList - List of data to be written (in hexadecimal). #
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| 300 |
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# Result : 0 if error, 1 otherwise. #
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| 301 |
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#=============================================================================#
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| 302 |
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proc dbg_burst_tx {CpuAddr Format DataList} {
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| 304 |
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# Compute device frame (address+WR/RD)
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| 305 |
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set DeviceFrameWR [format "0x%02x" [expr $CpuAddr*2+0]]
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set DeviceFrameRD [format "0x%02x" [expr $CpuAddr*2+1]]
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#----------------------------------------
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| 309 |
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# Format the list of bytes to be sent
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#----------------------------------------
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set tx_data ""
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foreach data [split $DataList] {
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if {$Format==1} { #### 8-bit data format ####
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# Format data
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| 316 |
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set data [format %02x $data]
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| 317 |
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| 318 |
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# Add data to list
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| 319 |
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set tx_data [concat $tx_data "0x$data"]
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| 320 |
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| 321 |
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} else { #### 16-bit data format ####
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| 322 |
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# Format data
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| 323 |
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set data [format %04x $data]
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| 324 |
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regexp {(..)(..)} $data match data_msb data_lsb
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| 325 |
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| 326 |
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# Add data to list
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| 327 |
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set tx_data [concat $tx_data "0x$data_lsb 0x$data_msb"]
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| 328 |
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}
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| 329 |
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}
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|
|
| 331 |
|
|
#----------------------------------------
|
| 332 |
|
|
# Send the list of bytes over I2C
|
| 333 |
|
|
#----------------------------------------
|
| 334 |
|
|
set Length [llength $tx_data]
|
| 335 |
|
|
|
| 336 |
|
|
while { $Length > 0 } {
|
| 337 |
|
|
|
| 338 |
|
|
# Maximum frame length is 16 bytes
|
| 339 |
|
|
if {$Length >= 16} {set txLength 16
|
| 340 |
|
|
} else {set txLength $Length}
|
| 341 |
|
|
|
| 342 |
|
|
# Compute I2C write command
|
| 343 |
|
|
set writeCmd [format "0x%x" [expr $txLength + 0x2f]]
|
| 344 |
|
|
|
| 345 |
|
|
# Get the data from the list and remove it from there
|
| 346 |
|
|
set hex_data [lrange $tx_data 0 [expr $txLength-1]]
|
| 347 |
|
|
set tx_data [lreplace $tx_data 0 [expr $txLength-1]]
|
| 348 |
|
|
|
| 349 |
|
|
# Read data: I2C_DIRECT I2C_START I2C_WRITE1 DEVICE_ADDRESS+WR WRITExx DATA STOP
|
| 350 |
|
|
utils::uart_tx [concat 0x57 0x01 0x30 $DeviceFrameWR $writeCmd $hex_data 0x03]
|
| 351 |
|
|
|
| 352 |
|
|
set response [utils::uart_rx 1 2]
|
| 353 |
|
|
if {[lindex $response 0] == 0x00} {
|
| 354 |
|
|
puts "I2C ERROR: $response"
|
| 355 |
|
|
return 0
|
| 356 |
|
|
}
|
| 357 |
|
|
|
| 358 |
|
|
# Remaining bytes to be received
|
| 359 |
|
|
set Length [expr $Length - $txLength]
|
| 360 |
|
|
}
|
| 361 |
|
|
|
| 362 |
|
|
}
|
| 363 |
|
|
|
| 364 |
|
|
#=============================================================================#
|
| 365 |
|
|
# i2c_usb-iss::get_allowed_speeds () #
|
| 366 |
|
|
#-----------------------------------------------------------------------------#
|
| 367 |
|
|
# Description: Return the list of allowed I2C configuration modes. #
|
| 368 |
|
|
#=============================================================================#
|
| 369 |
|
|
proc get_allowed_speeds {} {
|
| 370 |
|
|
|
| 371 |
|
|
# Not-Editable Default I2C-Operating-Modes
|
| 372 |
|
|
return [list 0 I2C_S_100KHZ [list I2C_S_20KHZ \
|
| 373 |
|
|
I2C_S_50KHZ \
|
| 374 |
|
|
I2C_S_100KHZ \
|
| 375 |
|
|
I2C_S_400KHZ \
|
| 376 |
|
|
I2C_H_100KHZ \
|
| 377 |
|
|
I2C_H_400KHZ \
|
| 378 |
|
|
I2C_H_1000KHZ] ]
|
| 379 |
|
|
}
|
| 380 |
|
|
|
| 381 |
|
|
###################################################################################################
|
| 382 |
|
|
###################################################################################################
|
| 383 |
|
|
###################################################################################################
|
| 384 |
|
|
###################################################################################################
|
| 385 |
|
|
####### #######
|
| 386 |
|
|
####### PRIVATE FUNCTIONS #######
|
| 387 |
|
|
####### #######
|
| 388 |
|
|
###################################################################################################
|
| 389 |
|
|
###################################################################################################
|
| 390 |
|
|
###################################################################################################
|
| 391 |
|
|
###################################################################################################
|
| 392 |
|
|
|
| 393 |
|
|
#=============================================================================#
|
| 394 |
|
|
# i2c_usb-iss::i2c_mode (OperatingMode) #
|
| 395 |
|
|
#-----------------------------------------------------------------------------#
|
| 396 |
|
|
# Description: Get the correcponding hexadecimal value for a given I2C mode. #
|
| 397 |
|
|
# Arguments : OperatingMode - Name of the I2C operating mode. #
|
| 398 |
|
|
# Result : Command to be sent via UART. #
|
| 399 |
|
|
#=============================================================================#
|
| 400 |
|
|
proc i2c_mode {OperatingMode} {
|
| 401 |
|
|
|
| 402 |
|
|
switch -exact $OperatingMode {
|
| 403 |
|
|
I2C_S_20KHZ {set op_mode "0x20"}
|
| 404 |
|
|
I2C_S_50KHZ {set op_mode "0x30"}
|
| 405 |
|
|
I2C_S_100KHZ {set op_mode "0x40"}
|
| 406 |
|
|
I2C_S_400KHZ {set op_mode "0x50"}
|
| 407 |
|
|
I2C_H_100KHZ {set op_mode "0x60"}
|
| 408 |
|
|
I2C_H_400KHZ {set op_mode "0x70"}
|
| 409 |
|
|
I2C_H_1000KHZ {set op_mode "0x80"}
|
| 410 |
|
|
default {set op_mode "0x40"}
|
| 411 |
|
|
}
|
| 412 |
|
|
|
| 413 |
|
|
return $op_mode
|
| 414 |
|
|
}
|
| 415 |
|
|
|
| 416 |
|
|
#=============================================================================#
|
| 417 |
|
|
# i2c_usb-iss::dbg_format_cmd (RegisterName, Action) #
|
| 418 |
|
|
#-----------------------------------------------------------------------------#
|
| 419 |
|
|
# Description: Get the correcponding UART command to a given debug register #
|
| 420 |
|
|
# access. #
|
| 421 |
|
|
# Arguments : RegisterName - Name of the register to be accessed. #
|
| 422 |
|
|
# Action - RD for read / WR for write. #
|
| 423 |
|
|
# Result : Command to be sent via UART. #
|
| 424 |
|
|
#=============================================================================#
|
| 425 |
|
|
proc dbg_format_cmd {RegisterName Action} {
|
| 426 |
|
|
|
| 427 |
|
|
switch -exact $Action {
|
| 428 |
|
|
RD {set rd_wr "0x00"}
|
| 429 |
|
|
WR {set rd_wr "0x080"}
|
| 430 |
|
|
default {set rd_wr "0x00"}
|
| 431 |
|
|
}
|
| 432 |
|
|
|
| 433 |
|
|
switch -exact $RegisterName {
|
| 434 |
|
|
CPU_ID_LO {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x00]]}
|
| 435 |
|
|
CPU_ID_HI {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x01]]}
|
| 436 |
|
|
CPU_CTL {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x02]]}
|
| 437 |
|
|
CPU_STAT {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x03]]}
|
| 438 |
|
|
MEM_CTL {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x04]]}
|
| 439 |
|
|
MEM_ADDR {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x05]]}
|
| 440 |
|
|
MEM_DATA {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x06]]}
|
| 441 |
|
|
MEM_CNT {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x07]]}
|
| 442 |
|
|
BRK0_CTL {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x08]]}
|
| 443 |
|
|
BRK0_STAT {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x09]]}
|
| 444 |
|
|
BRK0_ADDR0 {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x0A]]}
|
| 445 |
|
|
BRK0_ADDR1 {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x0B]]}
|
| 446 |
|
|
BRK1_CTL {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x0C]]}
|
| 447 |
|
|
BRK1_STAT {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x0D]]}
|
| 448 |
|
|
BRK1_ADDR0 {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x0E]]}
|
| 449 |
|
|
BRK1_ADDR1 {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x0F]]}
|
| 450 |
|
|
BRK2_CTL {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x10]]}
|
| 451 |
|
|
BRK2_STAT {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x11]]}
|
| 452 |
|
|
BRK2_ADDR0 {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x12]]}
|
| 453 |
|
|
BRK2_ADDR1 {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x13]]}
|
| 454 |
|
|
BRK3_CTL {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x14]]}
|
| 455 |
|
|
BRK3_STAT {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x40 | 0x15]]}
|
| 456 |
|
|
BRK3_ADDR0 {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x16]]}
|
| 457 |
|
|
BRK3_ADDR1 {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x17]]}
|
| 458 |
|
|
CPU_NR {set uart_cmd [format "0x%02x" [expr $rd_wr | 0x00 | 0x18]]}
|
| 459 |
|
|
default {set uart_cmd "0x00"}
|
| 460 |
|
|
}
|
| 461 |
|
|
|
| 462 |
|
|
return $uart_cmd
|
| 463 |
|
|
}
|
| 464 |
|
|
|
| 465 |
|
|
|
| 466 |
|
|
#=============================================================================#
|
| 467 |
|
|
# i2c_usb-iss::ISS_VERSION () #
|
| 468 |
|
|
#-----------------------------------------------------------------------------#
|
| 469 |
|
|
# Description: Will return three bytes. #
|
| 470 |
|
|
# The first is the Module ID, this will always be 7. #
|
| 471 |
|
|
# The second byte is the firmware revision number. #
|
| 472 |
|
|
# The third byte is the current operating mode. #
|
| 473 |
|
|
#=============================================================================#
|
| 474 |
|
|
proc ISS_VERSION {} {
|
| 475 |
|
|
|
| 476 |
|
|
# Send ISS-VERSION command to the adapter
|
| 477 |
|
|
utils::uart_tx [list 0x5A 0x01]
|
| 478 |
|
|
|
| 479 |
|
|
# Make sure 3 bytes are then received (the first one must be 0x07)
|
| 480 |
|
|
set iss_version [utils::uart_rx 1 3]
|
| 481 |
|
|
if {([lindex $iss_version 0] != "0x07") |
|
| 482 |
|
|
([lindex $iss_version 1] == "0x") |
|
| 483 |
|
|
([lindex $iss_version 2] == "0x")} {
|
| 484 |
|
|
return [list 0 0 0]
|
| 485 |
|
|
}
|
| 486 |
|
|
return $iss_version
|
| 487 |
|
|
}
|
| 488 |
|
|
|
| 489 |
|
|
#=============================================================================#
|
| 490 |
|
|
# i2c_usb-iss::GET_SER_NUM () #
|
| 491 |
|
|
#-----------------------------------------------------------------------------#
|
| 492 |
|
|
# Description: Will return the modules unique 8 byte USB serial number. #
|
| 493 |
|
|
#=============================================================================#
|
| 494 |
|
|
proc GET_SER_NUM {} {
|
| 495 |
|
|
|
| 496 |
|
|
# Send GET_SER_NUM command to the adapter
|
| 497 |
|
|
utils::uart_tx [list 0x5A 0x03]
|
| 498 |
|
|
|
| 499 |
|
|
# Get the 8 bytes
|
| 500 |
|
|
set serial_number [utils::uart_rx 1 8]
|
| 501 |
|
|
|
| 502 |
|
|
return $serial_number
|
| 503 |
|
|
}
|
| 504 |
|
|
|
| 505 |
|
|
#=============================================================================#
|
| 506 |
|
|
# i2c_usb-iss::ISS_MODE (OperatingMode) #
|
| 507 |
|
|
#-----------------------------------------------------------------------------#
|
| 508 |
|
|
# Description: Sets the operating mode. #
|
| 509 |
|
|
# This sets up the modules I/O pins and hardware for the #
|
| 510 |
|
|
# required mode. #
|
| 511 |
|
|
# There are 4 operating modes (I2C, SPI, Serial and I/O) some #
|
| 512 |
|
|
# which can be combined. #
|
| 513 |
|
|
# See online documentation for more info: #
|
| 514 |
|
|
# http://www.robot-electronics.co.uk/htm/usb_iss_tech.htm #
|
| 515 |
|
|
#=============================================================================#
|
| 516 |
|
|
proc ISS_MODE {OperatingMode} {
|
| 517 |
|
|
|
| 518 |
|
|
|
| 519 |
|
|
# Send the ISS_MODE command:
|
| 520 |
|
|
# ISS_CMD ISS_MODE OPERATION_MODE+REMAINING
|
| 521 |
|
|
utils::uart_tx [concat [list 0x5A 0x02 ] $OperatingMode ]
|
| 522 |
|
|
|
| 523 |
|
|
# Get the 2 byte response
|
| 524 |
|
|
set config_response [utils::uart_rx 1 2]
|
| 525 |
|
|
if {$config_response != [list 0xff 0x00]} {
|
| 526 |
|
|
return 0
|
| 527 |
|
|
}
|
| 528 |
|
|
return 1
|
| 529 |
|
|
}
|
| 530 |
|
|
|
| 531 |
|
|
#=============================================================================#
|
| 532 |
|
|
# i2c_usb-iss::SETPINS (IO1, IO2, IO3, IO4) #
|
| 533 |
|
|
#-----------------------------------------------------------------------------#
|
| 534 |
|
|
# Description: The SETPINS command only operates on pins that have been set #
|
| 535 |
|
|
# as output pins. #
|
| 536 |
|
|
# Digital or analogue input pins, or pins that are used for I2C #
|
| 537 |
|
|
# or serial are not affected. #
|
| 538 |
|
|
#=============================================================================#
|
| 539 |
|
|
proc SETPINS {IO1 IO2 IO3 IO4} {
|
| 540 |
|
|
|
| 541 |
|
|
# Get the hex value for IO configuration
|
| 542 |
|
|
set io_config [format "0x0%x" [expr $IO1+($IO2*2)+($IO3*4)+($IO4*8)]]
|
| 543 |
|
|
|
| 544 |
|
|
# Send the SETPINS command to the adaptor
|
| 545 |
|
|
utils::uart_tx [list 0x63 $io_config]
|
| 546 |
|
|
|
| 547 |
|
|
# Get the 1 byte response
|
| 548 |
|
|
set config_response [utils::uart_rx 1 1]
|
| 549 |
|
|
if {$config_response != "0xff"} {
|
| 550 |
|
|
return 0
|
| 551 |
|
|
}
|
| 552 |
|
|
return 1
|
| 553 |
|
|
}
|
| 554 |
|
|
|
| 555 |
|
|
#=============================================================================#
|
| 556 |
|
|
# i2c_usb-iss::GETPINS () #
|
| 557 |
|
|
#-----------------------------------------------------------------------------#
|
| 558 |
|
|
# Description: This is used to get the current state of all digital I/O pins #
|
| 559 |
|
|
#=============================================================================#
|
| 560 |
|
|
proc GETPINS {} {
|
| 561 |
|
|
|
| 562 |
|
|
# Send the GETPINS command to the adaptor
|
| 563 |
|
|
utils::uart_tx 0x64
|
| 564 |
|
|
|
| 565 |
|
|
# Get the 1 byte response
|
| 566 |
|
|
set config_response [utils::uart_rx 1 1]
|
| 567 |
|
|
if {$config_response == "0x"} {
|
| 568 |
|
|
return 0
|
| 569 |
|
|
}
|
| 570 |
|
|
|
| 571 |
|
|
# Get the hex value for IO configuration
|
| 572 |
|
|
set IO4 [expr ($config_response & 0x08)/8]
|
| 573 |
|
|
set IO3 [expr ($config_response & 0x04)/4]
|
| 574 |
|
|
set IO2 [expr ($config_response & 0x02)/2]
|
| 575 |
|
|
set IO1 [expr ($config_response & 0x01)/1]
|
| 576 |
|
|
|
| 577 |
|
|
return [list $IO1 $IO2 $IO3 $IO4]
|
| 578 |
|
|
}
|
| 579 |
|
|
|
| 580 |
|
|
}
|
