diff options
Diffstat (limited to 'src/br24t_eeprom_driver.c')
| -rw-r--r-- | src/br24t_eeprom_driver.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/src/br24t_eeprom_driver.c b/src/br24t_eeprom_driver.c index 53165d3..2fc0bd0 100644 --- a/src/br24t_eeprom_driver.c +++ b/src/br24t_eeprom_driver.c @@ -1,6 +1,12 @@ +#include <avr/io.h> #include <stdio.h> +#include <string.h> +#include <util/delay.h> #include "i2c.h" #include "br24t_eeprom_driver.h" +#include "uart.h" +#include "pins.h" +#include "debug.h" #define EEPROM_ADDR 0x57 #define EEPROM_PAGE_SIZE 64 @@ -13,29 +19,24 @@ #define PAGE_WRITE_CORRUPTED 0x01 #define PAGE_WRITE_UNKNOWN_ERROR 0xff -//we need another function cause it's got a 16 bit register address #ifdef FLASH_EEPROM void flash_eeprom() { - uint16_t data_len; - uint32_t syn = 0; + uint16_t page_len; uint8_t on_byte; uint8_t eeprom_buffer_out[EEPROM_PAGE_SIZE]; uint8_t eeprom_buffer_in[EEPROM_PAGE_SIZE]; - while(syn != MAGIC_SYN) fread(&syn, 4, 1, stdin); //not sure we _really_ need to do this? + fread(&page_len, 1, 1, stdin); - //this feels ugly - syn = MAGIC_ACK; - fwrite(&syn, 4, 1, stdout); - - //get amount of data we'll be using - data_len = uart_recvbyte(); - data_len |= (uart_recvbyte() >> 8); - - for(int page = 0; page < (data_len / EEPROM_PAGE_SIZE); data_len -= EEPROM_PAGE_SIZE) { + for(int page = 0; page < page_len; page -= page_len) { fread(eeprom_buffer_out, EEPROM_PAGE_SIZE, 1, stdin); + //fread(eeprom_buffer_out, 11, 1, stdin); + fputc(PAGE_WRITE_CORRUPTED, stdout); + + DEBUG_LED_ON(); + for(;;); i2c_start(EEPROM_I2C_ADDR, I2C_READ); i2c_send((uint8_t)(page * EEPROM_PAGE_SIZE) & 0xff); @@ -52,9 +53,9 @@ void flash_eeprom() { eeprom_buffer_in[on_byte] = i2c_recv(); i2c_stop(); - if(memcmp(eeprom_buffer_in, eeprom_buffer_out, EEPROM_PAGE_SIZE)) { + if(!memcmp(eeprom_buffer_in, eeprom_buffer_out, EEPROM_PAGE_SIZE)) { fputc(PAGE_WRITE_CORRUPTED, stdout); - error(); + for(;;); //TODO error here } fputc(PAGE_WRITE_OK, stdout); } |