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prommer.c
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prommer.c
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#include <stdio.h>
#include <string.h>
#include <vs1000.h>
#include <fat.h>
#include <player.h>
#include <dev1000.h>
#define PAGESIZE 32
#define SECTORSIZE 512
#define DEBUG
#define SPI_EEPROM_COMMAND_WRITE_ENABLE 0x06
#define SPI_EEPROM_COMMAND_WRITE_DISABLE 0x04
#define SPI_EEPROM_COMMAND_READ_STATUS_REGISTER 0x05
#define SPI_EEPROM_COMMAND_WRITE_STATUS_REGISTER 0x01
#define SPI_EEPROM_COMMAND_READ 0x03
#define SPI_EEPROM_COMMAND_WRITE 0x02
//macro to set SPI to MASTER; 8BIT; FSYNC Idle => xCS high
#define SPI_MASTER_8BIT_CSHI PERIP(SPI0_CONFIG) = \
SPI_CF_MASTER | SPI_CF_DLEN8 | SPI_CF_FSIDLE1
//macro to set SPI to MASTER; 8BIT; FSYNC not Idle => xCS low
#define SPI_MASTER_8BIT_CSLO PERIP(SPI0_CONFIG) = \
SPI_CF_MASTER | SPI_CF_DLEN8 | SPI_CF_FSIDLE0
//macro to set SPI to MASTER; 16BIT; FSYNC not Idle => xCS low
#define SPI_MASTER_16BIT_CSLO PERIP(SPI0_CONFIG) = \
SPI_CF_MASTER | SPI_CF_DLEN16 | SPI_CF_FSIDLE0
void SingleCycleCommand(u_int16 cmd){
SPI_MASTER_8BIT_CSHI;
SpiDelay(0);
SPI_MASTER_8BIT_CSLO;
SpiSendReceive(cmd);
SPI_MASTER_8BIT_CSHI;
SpiDelay(0);
}
/// Wait for not_busy (status[0] = 0) and return status
void SpiWaitStatus(void) {
SPI_MASTER_8BIT_CSHI;
SpiDelay(0);
SPI_MASTER_8BIT_CSLO;
SpiSendReceive(SPI_EEPROM_COMMAND_READ_STATUS_REGISTER);
while (SpiSendReceive(0xff) & 0x01) SpiDelay(0);
SPI_MASTER_8BIT_CSHI;
}
void SpiWriteBlock(register u_int16 blockn, register u_int16 *dptr) {
u_int16 i;
register u_int16 addr = blockn*512;
for (i = SECTORSIZE/(PAGESIZE); i > 0; i--){
SingleCycleCommand(SPI_EEPROM_COMMAND_WRITE_ENABLE);
SPI_MASTER_8BIT_CSLO;
SpiSendReceive(SPI_EEPROM_COMMAND_WRITE);
SPI_MASTER_16BIT_CSLO;
SpiSendReceive(addr);
{
register u_int16 j;
for (j = PAGESIZE/2; j > 0; j--) SpiSendReceive(*dptr++);
}
SpiWaitStatus();
addr += PAGESIZE;
}
}
u_int16 SpiReadBlock(register u_int16 blockn, register u_int16 *dptr) {
SpiWaitStatus();
SPI_MASTER_8BIT_CSLO;
SpiSendReceive(SPI_EEPROM_COMMAND_READ);
SPI_MASTER_16BIT_CSLO;
SpiSendReceive(blockn << 9); // Address[15:8] = blockn[6:0]0
// Address[7:0] = 00000000
{
register u_int16 i;
for (i = SECTORSIZE/2; i > 0; i--) *dptr++ = SpiSendReceive(0);
}
SPI_MASTER_8BIT_CSHI;
return 0;
}
#ifdef DEBUG
static char hex[] = "0123456789ABCDEF";
void puthex(u_int16 d) {
char mem[5];
mem[0] = hex[(d>>12)&15];
mem[1] = hex[(d>>8)&15];
mem[2] = hex[(d>>4)&15];
mem[3] = hex[(d>>0)&15];
mem[4] = '\0';
fputs(mem, stdout);
}
#endif
void WriteEEPROM(void) {
FILE *fp;
PERIP(INT_ENABLEL) &= ~INTF_RX;
#ifdef DEBUG
puts("Trying to open eeprom.img");
#endif
if (fp = fopen ("eeprom.img", "rb")) {
u_int16 len;
u_int16 sectorNumber = 0;
#ifdef DEBUG
puts("Erase first sector...");
#endif
memset(minifatBuffer, 0, SECTORSIZE/2);
SpiWriteBlock(sectorNumber, minifatBuffer);
SpiReadBlock(0, minifatBuffer);
#ifdef DEBUG
puthex(minifatBuffer[0]);
puts("\n");
#endif
if (minifatBuffer[0] != 0x0000) {
#ifdef DEBUG
puts("Can't erase EEPROM!");
#endif
return;
}
#ifdef DEBUG
puts("Programming...");
#endif
while ((len = fread(minifatBuffer, 1, SECTORSIZE/2, fp))){
fputs("Sector ", stdout);
puthex(sectorNumber);
puts("...");
SpiWriteBlock(sectorNumber, minifatBuffer);
sectorNumber++;
}
fclose(fp); // Programming complete.
minifatBuffer[0]=0;
#ifdef DEBUG
fputs("Reading first 2 words of EEPROM: ", stdout);
#endif
SpiReadBlock(0, minifatBuffer);
#ifdef DEBUG
puthex(minifatBuffer[0]);
puthex(minifatBuffer[1]);
fputs(" (\"", stdout);
putchar(minifatBuffer[0] >> 8);
putchar(minifatBuffer[0] & 0xff);
putchar(minifatBuffer[1] >> 8);
putchar(minifatBuffer[1] & 0xff);
if ((minifatBuffer[0] == 0x564c) && (minifatBuffer[1] == 0x5349)) {
puts("\"), which is a valid VLSI boot id.");
} else {
puts("\"), which is NOT a valid VLSI boot id!");
}
puts("Done.");
#endif
} else {
#ifdef DEBUG
puts("File not found\n");
#endif
}
PERIP(INT_ENABLEL) |= INTF_RX;
}
void main(void) {
#ifdef DEBUG
puts("Entered main()");
#endif
SPI_MASTER_8BIT_CSHI;
PERIP(SPI0_FSYNC) = 0;
PERIP(SPI0_CLKCONFIG) = SPI_CC_CLKDIV * (12-1);
PERIP(GPIO1_MODE) |= 0x1f; // enable SPI pins
PERIP(INT_ENABLEL) &= ~INTF_RX; // disable UART RX interrupt
PERIP(INT_ENABLEL) |= INTF_RX | INTF_TIM0;
WriteEEPROM();
}