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get read/write and bulks working

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This commit is contained in:
David Voswinkel
2009-06-24 20:18:25 +02:00
parent b6956c8fbd
commit a9640af2bf
9 changed files with 74 additions and 70 deletions
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45
avr/usbload/sram.c
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@@ -1,7 +1,6 @@
#include <stdlib.h>
#include <stdint.h>
#include <avr/io.h>
#include <avr/wdt.h>
#include <util/delay.h> /* for _delay_ms() */
@@ -97,6 +96,7 @@ void sreg_set(uint32_t addr)
}
void sram_bulk_read_start(uint32_t addr)
{
#ifdef DEBUG_SRAM
@@ -105,7 +105,6 @@ void sram_bulk_read_start(uint32_t addr)
avr_data_in();
AVR_CS_PORT &= ~(1 << AVR_CS_PIN);
AVR_WR_PORT |= (1 << AVR_WR_PIN);
AVR_RD_PORT |= (1 << AVR_RD_PIN);
@@ -113,15 +112,7 @@ void sram_bulk_read_start(uint32_t addr)
AVR_RD_PORT &= ~(1 << AVR_RD_PIN);
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
}
}
inline void sram_bulk_read_next(void)
{
@@ -130,24 +121,12 @@ inline void sram_bulk_read_next(void)
AVR_RD_PORT &= ~(1 << AVR_RD_PIN);
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
}
inline uint8_t sram_bulk_read(void)
{
uint8_t byte;
byte = AVR_DATA_PIN;
AVR_RD_PORT |= (1 << AVR_RD_PIN);
return byte;
return AVR_DATA_PIN;
}
void sram_bulk_read_end(void)
@@ -155,6 +134,7 @@ void sram_bulk_read_end(void)
#ifdef DEBUG_SRAM
printf("sram_bulk_read_end:");
#endif
AVR_RD_PORT |= (1 << AVR_RD_PIN);
AVR_CS_PORT |= (1 << AVR_CS_PIN);
avr_data_in();
}
@@ -162,7 +142,7 @@ void sram_bulk_read_end(void)
uint8_t sram_read(uint32_t addr)
{
uint8_t byte;
#ifdef DEBUG_SRAM
#ifdef DEBUG_SRAM_RAW
printf("sram_read: addr=0x%08lx\n\r", addr);
#endif
@@ -177,13 +157,6 @@ uint8_t sram_read(uint32_t addr)
AVR_RD_PORT &= ~(1 << AVR_RD_PIN);
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 = AVR_DATA_PIN;
@@ -216,17 +189,13 @@ void sram_bulk_write_start(uint32_t addr)
inline void sram_bulk_write_next(void)
{
AVR_RD_PORT |= (1 << AVR_RD_PIN);
counter_up();
AVR_WR_PORT &= ~(1 << AVR_WR_PIN);
}
inline void sram_bulk_write( uint8_t data)
{
AVR_DATA_PORT = data;
AVR_WR_PORT |= (1 << AVR_WR_PIN);
}
void sram_bulk_write_end(void)
@@ -234,8 +203,8 @@ void sram_bulk_write_end(void)
#ifdef DEBUG_SRAM
printf("sram_bulk_write_end:");
#endif
AVR_WR_PORT |= (1 << AVR_WR_PIN);
AVR_CS_PORT |= (1 << AVR_CS_PIN);
avr_data_in();
}
@@ -243,7 +212,7 @@ void sram_bulk_write_end(void)
void sram_write(uint32_t addr, uint8_t data)
{
#ifdef DEBUG_SRAM
#ifdef DEBUG_SRAM_RAW
printf("sram_write: addr=0x%08lx data=%x\n\r", addr, data);
#endif