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Dependencies: mbed EthernetInterface mbed-rtos
Fork of Bootloader_K64F by
Diff: Bootloader/bootloader.h
- Revision:
- 7:4ab0430d06e3
- Child:
- 8:00cefe0d59ed
diff -r 76c37fd3780a -r 4ab0430d06e3 Bootloader/bootloader.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Bootloader/bootloader.h Sat Apr 23 15:10:04 2016 +0000 @@ -0,0 +1,87 @@ +#define START_ADDRESS 0x80000 +#define NUM_SECTORS 120 +#define SECTOR_SIZE 4096 +#define BUFFER_SIZE 16 +#define TIMEOUT 10000000 + +int *(*program_flash_boot)(int, char*, unsigned int) = (int *(*)(int, char*, unsigned int))0x795C9; +int *(*erase_sector_boot)(int) = (int *(*)(int))0x79465; +void *(*bootloader)(int) = (void *(*)(int))0x79121; + +static void write(char *value) +{ + int i = 0; + //Loop through string and send everything + while(*(value+i) != '\0') { + while(!(UART0->S1 & UART_S1_TDRE_MASK)); + UART0->D = *(value+i); + i++; + } + } + + +void write_flash(void) { + __disable_irq(); + printf("Erasing flash!\r\n"); + for (int i = 0; i < NUM_SECTORS; i++) + erase_sector_boot(START_ADDRESS + i * SECTOR_SIZE); + + char buffer[BUFFER_SIZE]; + uint32_t count = 0; + uint8_t buffercount = 0; + uint32_t timeout = 0; + + //Wait until data is sent + while(!(UART0->S1 & UART_S1_RDRF_MASK)); + + //Data receive loop + while(1) { + //Check if there is new data + if (UART0->S1 & UART_S1_RDRF_MASK) { + //Place data in buffer + buffer[buffercount] = UART0->D; + buffercount++; + + //Reset timeout + timeout = 0; + + //We write per BUFFER_SIZE chars + if (buffercount == BUFFER_SIZE) { + //NMI Handler is at bytes 8-9-10-11, we overwrite this to point to bootloader function + + //Program the buffer into the flash memory + if (program_flash_boot(count+START_ADDRESS, buffer, BUFFER_SIZE) != 0) { + write("Error!\r\n"); + break; + } + + //Reset buffercount for next buffer + write("#"); + buffercount = 0; + count += BUFFER_SIZE; + } + } else { + //No new data, increase timeout + timeout++; + + //We have received no new data for a while, assume we are done + if (timeout > TIMEOUT) { + //If there is data left in the buffer, program it + if (buffercount != 0) { + for (int i = buffercount; i<BUFFER_SIZE; i++) { + buffer[i] = 0xFF; + } + program_flash_boot(count+START_ADDRESS, buffer, BUFFER_SIZE); + count += BUFFER_SIZE; + } + break; //We should be done programming :D + } + } + } + + printf("Done writing\r\n"); + printf("Size = %d - %X\r\n", count, count); + + bootloader(count); + +} \ No newline at end of file