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Line 40... |
#include "spi_flash.h"
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#include "spi_flash.h"
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#include "spi.h"
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#include "spi.h"
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#include "debugprint.h"
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#include "debugprint.h"
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#include "stdint.h"
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#include "stdint.h"
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SPI_flash xdata flash_dr;
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SPI_flash xdata flash_dr;
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/** \brief Internal: Helper function to count the number of active (1) bits in a byte */
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/** \brief Internal: Helper function to count the number of active (1) bits in a byte */
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static unsigned char
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static unsigned char
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Line 68... |
{
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{
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// Software enables are active high.
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// Software enables are active high.
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// Hardware enables are active low.
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// Hardware enables are active low.
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if(count_bits8(enables) > 1) {
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if(count_bits8(enables) > 1) {
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//print_info("en\n");
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//print_error("en\n");
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return;
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return;
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}
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}
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else {
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else {
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bitSPI_CLK = 0; //make shure spi_clk is low before we activate a device
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bitSPI_CLK = 0; //make shure spi_clk is low before we activate a device
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SPI_OE |= bmSPI_MASK; //activate spi bus
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SPI_OE |= bmSPI_MASK; //activate spi bus
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enables &= bmSPI_CS_MASK;
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enables &= bmSPI_CS_MASK;
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SPI_CS_PORT |= bmSPI_CS_MASK; //disable all chipselect signals
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SPI_CS_PORT |= bmSPI_CS_MASK; //disable all chipselect signals
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SPI_CS_PORT &= ~enables;
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SPI_CS_PORT &= ~enables;
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SPI_CS_OE |= enables;
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//SPI_CS_OE |= enables;
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SPI_CS_OE |= bmSPI_CS_MASK;
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}
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}
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}
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}
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/** disables all SPI devices and sets the SPI and SPI CS signals to tri-state */
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/** disables all SPI devices and sets the SPI and SPI CS signals to tri-state */
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#define disable_all() {setup_enables (0); SPI_OE &= ~bmSPI_MASK;}
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#define disable_all() { \
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setup_enables (0); \
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} /* SPI_OE &= ~bmSPI_MASK; \
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SPI_CS_OE &= ~bmSPI_CS_MASK; \
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} */
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/** \brief Internal: Writes one byte to the SPI bus
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/** \brief Internal: Writes one byte to the SPI bus
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*
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*
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* \param[in] data to write to the bus
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* \param[in] data to write to the bus
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Line 223... |
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return GOOD;
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return GOOD;
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}
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}
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else {
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else {
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return UNSUPPORTED_TYPE;
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return UNSUPPORTED_TYPE;
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/* debug stuff: */
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//return *idPtr;
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}
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}
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}
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}
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/** \brief Reads data from the SPI flash */
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/** \brief Reads data from the SPI flash */
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Line 239... |
while(spiflash_is_busy(flashPtr));
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while(spiflash_is_busy(flashPtr));
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//print_info("r\n");
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//print_info("r\n");
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/* we do a bit dirty programming here:
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/* we do a bit dirty programming here:
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* the adress of the device is only 24bit long, so we misuse the upper 8bits to send the
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* the adress of the device is only 24bit long, so we misuse the upper 8bits
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* read command to the spi flash. this avoids more complicated constructs. */
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* to send the read command to the spi flash.
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* this avoids more complicated constructs. */
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*adress &= 0x00FFFFFF;
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*adress &= 0x00FFFFFF;
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*adress |= 0x03000000; //set the upper 8bit to the READ command
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*adress |= 0x03000000; //set the upper 8bit to the READ command
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/*printf_tiny("ad: %x,",((uint8_t*)adress)[2]);
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/*printf_tiny("ad: %x,",((uint8_t*)adress)[2]);
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printf_tiny("%x,",((uint8_t*)adress)[1]);
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printf_tiny("%x,",((uint8_t*)adress)[1]);
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Line 271... |
setup_enables(bmSPI_CS_FLASH);
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setup_enables(bmSPI_CS_FLASH);
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write_byte_msb(WREN);
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write_byte_msb(WREN);
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disable_all();
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disable_all();
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/* we do a bit dirty programming here:
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/* we do a bit dirty programming here:
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* the adress of the device is only 24bit long, so we misuse the upper 8bits to send the
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* the adress of the device is only 24bit long, so we misuse the upper 8bits
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* read command to the spi flash. this avoids more complicated constructs. */
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* to send the read command to the spi flash.
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* this avoids more complicated constructs. */
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*adress &= 0x00FFFFFF;
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*adress &= 0x00FFFFFF;
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*adress |= 0xD8000000; //set the upper 8bit to the SE (sector erase) command
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*adress |= 0xD8000000; //set the upper 8bit to the SE (sector erase) command
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//print_info("e\n");
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//print_info("e\n");
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Line 335... |
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//print_info("w\n");
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//print_info("w\n");
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//printf_tiny("%d\n",writeableBytes);
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//printf_tiny("%d\n",writeableBytes);
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/* we do a bit dirty programming here:
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/* we do a bit dirty programming here:
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* the adress of the device is only 24bit long, so we misuse the upper 8bits to send the
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* the adress of the device is only 24bit long, so we misuse the upper 8bits
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* read command to the spi flash. this avoids more complicated constructs. */
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* to send the read command to the spi flash.
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* this avoids more complicated constructs. */
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*adress &= 0x00FFFFFF;
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*adress &= 0x00FFFFFF;
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*adress |= 0x02000000; //set the upper 8bit to the PP (page programm) command
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*adress |= 0x02000000; //set the upper 8bit to the PP (page programm) command
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/*printf_tiny("ad: %x,",((uint8_t*)adress)[3]);
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/*printf_tiny("ad: %x,",((uint8_t*)adress)[3]);
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printf_tiny("%x,",((uint8_t*)adress)[2]);
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printf_tiny("%x,",((uint8_t*)adress)[2]);
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