From d0801b36b47d8f3da610597160fde92059fd7e62 Mon Sep 17 00:00:00 2001 From: Nao Pross Date: Mon, 7 Aug 2017 19:27:05 +0200 Subject: implementation for avr programmer the programmer will receive the binary in blocks of defined size by a program under sw/programmer/linux (moved from sw/linux). --- sw/programmer/avr/main.c | 109 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 sw/programmer/avr/main.c (limited to 'sw/programmer/avr/main.c') diff --git a/sw/programmer/avr/main.c b/sw/programmer/avr/main.c new file mode 100644 index 0000000..90d05fa --- /dev/null +++ b/sw/programmer/avr/main.c @@ -0,0 +1,109 @@ +#include "fileinfo.h" +#include "usart.h" +#include + +#define EEPROM_TICK_MS 10 + +#define ADDRCR PORTB +#define EEPROMCR PORTC +#define EEPROMDR PORTD + +#define ADDR_BIT 0 +#define ADDR_EL 3 +#define ADDR_EH 4 +#define ADDR_DL 5 +#define ADDR_DH 6 + +#define EEPROM_WR 0 +#define EEPROM_RD 1 +#define EEPROM_CLK 2 + + +void eeprom_write(uint16_t addr, uint8_t byte); +void eeprom_tick(); + +int main(void) +{ + uint8_t *buffer, i; + uint16_t addr; + size_t read; + + struct file_info *finfo = malloc(sizeof(struct file_info)); + + DDRB = 0x7F; + DDRC = 0x83; + DDRD = 0xFC; + + /* get configuration */ + usart_init(1200); + + usart_print("EEPROM Programmer\n\r"); + + do { + usart_print("Waiting for configuration\n\r"); + read = usart_read((uint8_t *) finfo, sizeof(struct file_info)); + } while (read != sizeof(struct file_info)); + + usart_print("Programmer Ready\n\n\r"); + + buffer = malloc(finfo->blklen); + addr = finfo->start_addr; + + /* read file */ + while ((read = usart_read(buffer, finfo->blklen))) { + for (i = 0; i < read; i++) { + eeprom_write(addr + i, *(buffer++)); + } + + addr += finfo->blklen; + } + + return 0; +} + + +void eeprom_write(uint16_t addr, uint8_t byte) +{ + int bit; + + /* set address */ + for (bit = 0; bit < 8; bit++) { + // clear bit + ADDRCR &= ~0x07; + // select the bit + ADDRCR |= bit; + + // write bit for lower byte + if (addr & _BV(bit)) + ADDRCR |= _BV(ADDR_DL); + else + ADDRCR &= ~_BV(ADDR_DL); + + // write bit for higher byte + if ((addr>>8) & _BV(bit)) + ADDRCR |= _BV(ADDR_DH); + else + ADDRCR &= ~_BV(ADDR_DH); + } + + /* set data */ + EEPROMDR = byte; + EEPROMCR &= ~(_BV(ADDR_EH) | _BV(ADDR_EL)); + + /* write eeprom */ + EEPROMCR &= ~_BV(EEPROM_WR); + eeprom_tick(); + + EEPROMCR |= _BV(EEPROM_WR); + EEPROMCR |= _BV(ADDR_EH) | _BV(ADDR_EL); +} + +/* pulse the clock line for the eeprom */ +void eeprom_tick() +{ + EEPROMCR |= _BV(EEPROM_CLK); + _delay_ms(EEPROM_TICK_MS); + EEPROMCR &= ~_BV(EEPROM_CLK); + _delay_ms(EEPROM_TICK_MS); +} + -- cgit v1.2.1 From c7925cbb73f319a390507b33e4df44f106822683 Mon Sep 17 00:00:00 2001 From: Nao Pross Date: Wed, 23 Aug 2017 16:43:56 +0200 Subject: new programmer interface for linux there is a new program with GUI (gtk3) to send data to its avr conterpart. it needs to be tested, since there may be a few bugs in it; building a GUI was a terrible idea. --- sw/programmer/avr/main.c | 42 ++++++++++++++++++++++++++---------------- 1 file changed, 26 insertions(+), 16 deletions(-) (limited to 'sw/programmer/avr/main.c') diff --git a/sw/programmer/avr/main.c b/sw/programmer/avr/main.c index 90d05fa..9cdc35d 100644 --- a/sw/programmer/avr/main.c +++ b/sw/programmer/avr/main.c @@ -1,5 +1,6 @@ -#include "fileinfo.h" #include "usart.h" + +#include #include #define EEPROM_TICK_MS 10 @@ -18,6 +19,11 @@ #define EEPROM_RD 1 #define EEPROM_CLK 2 +struct file_blk +{ + uint16_t addr; + uint16_t size; +}; void eeprom_write(uint16_t addr, uint8_t byte); void eeprom_tick(); @@ -25,10 +31,10 @@ void eeprom_tick(); int main(void) { uint8_t *buffer, i; - uint16_t addr; size_t read; + char str[64]; - struct file_info *finfo = malloc(sizeof(struct file_info)); + struct file_blk *blk = malloc(sizeof(struct file_blk)); DDRB = 0x7F; DDRC = 0x83; @@ -36,28 +42,32 @@ int main(void) /* get configuration */ usart_init(1200); + usart_print("programmer Ready\n\n\r"); - usart_print("EEPROM Programmer\n\r"); - - do { - usart_print("Waiting for configuration\n\r"); - read = usart_read((uint8_t *) finfo, sizeof(struct file_info)); - } while (read != sizeof(struct file_info)); + while (usart_read((uint8_t *) blk, sizeof(struct file_blk))) { + buffer = malloc(blk->size); + read = usart_read(buffer, blk->size); - usart_print("Programmer Ready\n\n\r"); +#ifdef DEBUG + sprintf(str, "info : reading block from addr %d of size %d\n\r", + blk->addr, blk->size); + usart_print(str); - buffer = malloc(finfo->blklen); - addr = finfo->start_addr; + if (read != blk->size) { + sprintf(str, "error: expected %d but read %d\n\r", + blk->size, read); + usart_print(str); + } +#endif - /* read file */ - while ((read = usart_read(buffer, finfo->blklen))) { for (i = 0; i < read; i++) { - eeprom_write(addr + i, *(buffer++)); + eeprom_write(blk->addr +i, buffer[i]); } - addr += finfo->blklen; + free(buffer); } + free(blk); return 0; } -- cgit v1.2.1