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o ported the code to stk 500 using a mega16

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This commit is contained in:
optixx
2009-03-15 22:10:22 +01:00
parent 9a40d078dd
commit 04c6c64e12
7 changed files with 275 additions and 307 deletions
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180
poc/avr_sdcard/main.c
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@@ -1,4 +1,3 @@
#define F_CPU 8000000
#include <avr/io.h>
#include <util/delay.h>
@@ -9,37 +8,47 @@
#include "fat.h"
//SREG defines
#define S_MOSI PB3
#define S_MISO PB4
#define S_SCK PB5
#define S_LATCH PB2
#define S_MOSI PB5
#define S_MISO PB6
#define S_SCK PB7
#define S_LATCH PB4
//DEBUG defines
#define D_LED0 PC5
#define D_LED0 PD6
//SRAM defines
#define R_WR PB6
#define R_RD PB7
#define R_DATA PORTD
#define R_DIR DDRD
#define R_WR PB1
#define R_RD PB0
#define RAM_PORT PORTA
#define RAM_DIR DDRA
#define RAM_REG PINA
#define CTRL_PORT PORTB
#define CTR_DIR DDRB
#define LATCH_PORT PORTB
#define LATCH_DIR DDRB
#define SPI_PORT PORTB
#define SPI_DIR DDRB
#define LED_PORT PORTD
#define LED_DIR DDRD
#define DEBUG_BUFFER_SIZE 128
#define READ_BUFFER_SIZE 512
#define BLOCKS 512
#define debug(x, fmt) printf("%s:%u: %s=" fmt, __FILE__, __LINE__, #x, x)
extern FILE uart_stdout;
uint8_t debug_buffer[DEBUG_BUFFER_SIZE];
uint8_t read_buffer[READ_BUFFER_SIZE];
void dprintf(const uint8_t * fmt, ...) {
va_list args;
va_start(args, fmt);
vsprintf(debug_buffer, fmt, args);
va_end(args);
uart_puts(debug_buffer);
}
void dump_packet(uint32_t addr,uint32_t len,uint8_t *packet){
uint16_t i,j;
uint16_t sum =0;
@@ -48,21 +57,22 @@ void dump_packet(uint32_t addr,uint32_t len,uint8_t *packet){
for (j=0;j<16;j++) {
sum +=packet[i+j];
}
if (!sum)
if (!sum){
//printf(".");
continue;
dprintf("%08x:", addr + i);
for (j=0;j<16;j++) {
dprintf(" %02x", packet[i+j]);
}
dprintf(" |");
printf("%08lx:", addr + i);
for (j=0;j<16;j++) {
printf(" %02x", packet[i+j]);
}
printf(" |");
for (j=0;j<16;j++) {
if (packet[i+j]>=33 && packet[i+j]<=126 )
dprintf("%c", packet[i+j]);
printf("%c", packet[i+j]);
else
dprintf(".");
printf(".");
}
dprintf("|\n");
printf("|\n");
}
}
@@ -70,9 +80,9 @@ void dump_packet(uint32_t addr,uint32_t len,uint8_t *packet){
void spi_init(void)
{
/* Set MOSI and SCK output, all others input */
DDRB |= ((1<<S_MOSI) | (1<<S_SCK) | (1<<S_LATCH));
DDRB &= ~(1<<S_MISO);
PORTB |= (1<<S_MISO);
SPI_DIR |= ((1<<S_MOSI) | (1<<S_SCK) | (1<<S_LATCH));
SPI_DIR &= ~(1<<S_MISO);
SPI_PORT |= (1<<S_MISO);
/* Enable SPI, Master*/
SPCR = ((1<<SPE) | (1<<MSTR));
}
@@ -90,64 +100,70 @@ uint8_t sram_read(uint32_t addr)
{
uint8_t byte;
DDRD=0x00;
PORTD=0xff;
RAM_DIR = 0x00;
RAM_PORT = 0xff;
PORTB |= (1<<R_RD);
PORTB |= (1<<R_WR);
CTRL_PORT |= (1<<R_RD);
CTRL_PORT |= (1<<R_WR);
spi_master_transmit((uint8_t)(addr>>16));
spi_master_transmit((uint8_t)(addr>>8));
spi_master_transmit((uint8_t)(addr>>0));
PORTB |= (1<<S_LATCH);
PORTB &= ~(1<<S_LATCH);
PORTB &= ~(1<<R_RD);
LATCH_PORT |= (1<<S_LATCH);
LATCH_PORT &= ~(1<<S_LATCH);
CTRL_PORT &= ~(1<<R_RD);
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
byte = PIND;
PORTB |= (1<<R_RD);
DDRD=0x00;
PORTD=0x00;
byte = RAM_REG;
CTRL_PORT |= (1<<R_RD);
RAM_DIR =0x00;
RAM_PORT =0x00;
return byte;
}
void sram_write(uint32_t addr, uint8_t data)
{
DDRD=0xff;
RAM_DIR = 0xff;
PORTB |= (1<<R_RD);
PORTB |= (1<<R_WR);
CTRL_PORT |= (1<<R_RD);
CTRL_PORT |= (1<<R_WR);
spi_master_transmit((uint8_t)(addr>>16));
spi_master_transmit((uint8_t)(addr>>8));
spi_master_transmit((uint8_t)(addr>>0));
PORTB |= (1<<S_LATCH);
PORTB &= ~(1<<S_LATCH);
LATCH_PORT |= (1<<S_LATCH);
LATCH_PORT &= ~(1<<S_LATCH);
PORTB &= ~(1<<R_WR);
CTRL_PORT &= ~(1<<R_WR);
PORTD=data;
RAM_PORT = data;
CTRL_PORT |= (1<<R_WR);
PORTB |= (1<<R_WR);
DDRD=0x00;
PORTD=0x00;
RAM_DIR = 0x00;
RAM_PORT = 0x00;
}
void sram_init(void){
DDRD=0x00;
PORTD=0x00;
RAM_DIR = 0x00;
RAM_PORT = 0x00;
DDRB |= ((1<<R_WR) | (1<<R_RD));
PORTB |= (1<<R_RD);
PORTB |= (1<<R_WR);
CTR_DIR |= ((1<<R_WR) | (1<<R_RD));
CTRL_PORT |= (1<<R_RD);
CTRL_PORT |= (1<<R_WR);
DDRC |= (1<<D_LED0);
LED_PORT |= (1<<D_LED0);
}
@@ -163,7 +179,7 @@ void sram_copy(uint32_t addr,uint8_t *src, uint32_t len){
uint32_t i;
uint8_t *ptr = src;
for (i=addr; i<(addr + len);i++ )
sram_write(addr, *ptr++);
sram_write(i, *ptr++);
}
void sram_read_buffer(uint32_t addr,uint8_t *dst, uint32_t len){
@@ -171,7 +187,7 @@ void sram_read_buffer(uint32_t addr,uint8_t *dst, uint32_t len){
uint32_t i;
uint8_t *ptr = dst;
for (i=addr; i<(addr + len);i++ ){
*ptr = sram_read(addr);
*ptr = sram_read(i);
ptr++;
}
}
@@ -187,27 +203,35 @@ int main(void)
uart_init();
stdout = &uart_stdout;
sram_init();
dprintf("sram_init\n");
printf("sram_init\n");
spi_init();
dprintf("spi_init\n");
printf("spi_init\n");
/*
sram_clear(0x000000, 0x400000);
dprintf("sram_clear\n");
printf("sram_clear\n");
*/
//printf("read 0x0f0f\n");
//sram_read(0x0f0f);
//printf("write 0x0f0f\n");
//sram_write(0x0f0f,0xaa);
//while(1);
while ( mmc_init() !=0) {
dprintf("no sdcard..\n\r");
printf("no sdcard..\n");
}
dprintf("mmc_init\n\r");
printf("mmc_init\n");
fat_init(read_buffer);
dprintf("fat_init\n\r");
printf("fat_init\n");
rom_addr = 0x000000;
dprintf("look for sprite.smc\n\r");
printf("look for sprite.smc\n");
if (fat_search_file((uint8_t*)"sprite.smc",
&fat_cluster,
@@ -215,17 +239,19 @@ int main(void)
&fat_attrib,
read_buffer) == 1) {
for (uint16_t block_cnt=0; block_cnt<512; block_cnt++) {
for (uint16_t block_cnt=0; block_cnt<BLOCKS; block_cnt++) {
fat_read_file (fat_cluster,read_buffer,block_cnt);
dprintf("Read Block %i addr 0x%06\n",block_cnt,rom_addr);
printf("Read Block %i addr 0x%06lx\n",block_cnt,rom_addr);
//dump_packet(rom_addr,512,read_buffer);
sram_copy(rom_addr,read_buffer,512);
rom_addr += 512;
}
}
rom_addr = 0x000000;
for (uint16_t block_cnt=0; block_cnt<512; block_cnt++) {
for (uint16_t block_cnt=0; block_cnt<BLOCKS; block_cnt++) {
sram_read_buffer(rom_addr,read_buffer,512);
printf("Block %i\n",block_cnt);
dump_packet(rom_addr,512,read_buffer);
rom_addr += 512;
}