Stefano Mammolito / Mbed OS mbed-os-bootloader-F411

Simple F411 bootloader.

Dependencies:   sd-driver

main.cpp@0:cd3dd72a93f5, 2018-04-10 (annotated)

Committer:
stema
Date:
Tue Apr 10 08:52:17 2018 +0000
Revision:
0:cd3dd72a93f5
Simple F411 SD bootloader.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
stema 0:cd3dd72a93f5 1 #include "SDBlockDevice.h"
stema 0:cd3dd72a93f5 2 #include "FATFileSystem.h"
stema 0:cd3dd72a93f5 3
stema 0:cd3dd72a93f5 4 #define SD_MOUNT_PATH "sd"
stema 0:cd3dd72a93f5 5 #define FULL_UPDATE_FILE_PATH "/" SD_MOUNT_PATH "/blinky.bin"
stema 0:cd3dd72a93f5 6
stema 0:cd3dd72a93f5 7 #define POST_APPLICATION_ADDR 0x08020000
stema 0:cd3dd72a93f5 8
stema 0:cd3dd72a93f5 9 #if !defined(POST_APPLICATION_ADDR)
stema 0:cd3dd72a93f5 10 #error "target.restrict_size must be set for your target in mbed_app.json"
stema 0:cd3dd72a93f5 11 #endif
stema 0:cd3dd72a93f5 12
stema 0:cd3dd72a93f5 13 //Pin order: MOSI, MISO, SCK, CS
stema 0:cd3dd72a93f5 14 SDBlockDevice sd(SPI_MOSI, SPI_MISO,
stema 0:cd3dd72a93f5 15 SPI_SCK, SPI_CS);
stema 0:cd3dd72a93f5 16 FATFileSystem fs(SD_MOUNT_PATH);
stema 0:cd3dd72a93f5 17 FlashIAP flash;
stema 0:cd3dd72a93f5 18
stema 0:cd3dd72a93f5 19 void apply_update(FILE *file, uint32_t address);
stema 0:cd3dd72a93f5 20
stema 0:cd3dd72a93f5 21 int main()
stema 0:cd3dd72a93f5 22 {
stema 0:cd3dd72a93f5 23 sd.init();
stema 0:cd3dd72a93f5 24 fs.mount(&sd);
stema 0:cd3dd72a93f5 25
stema 0:cd3dd72a93f5 26 FILE *file = fopen(FULL_UPDATE_FILE_PATH, "rb");
stema 0:cd3dd72a93f5 27 if (file != NULL) {
stema 0:cd3dd72a93f5 28 printf("Firmware update found\r\n");
stema 0:cd3dd72a93f5 29
stema 0:cd3dd72a93f5 30 apply_update(file, POST_APPLICATION_ADDR);
stema 0:cd3dd72a93f5 31
stema 0:cd3dd72a93f5 32 fclose(file);
stema 0:cd3dd72a93f5 33 remove(FULL_UPDATE_FILE_PATH);
stema 0:cd3dd72a93f5 34 } else {
stema 0:cd3dd72a93f5 35 printf("No update found to apply\r\n");
stema 0:cd3dd72a93f5 36 }
stema 0:cd3dd72a93f5 37
stema 0:cd3dd72a93f5 38 fs.unmount();
stema 0:cd3dd72a93f5 39 sd.deinit();
stema 0:cd3dd72a93f5 40
stema 0:cd3dd72a93f5 41 printf("Starting application\r\n");
stema 0:cd3dd72a93f5 42
stema 0:cd3dd72a93f5 43 mbed_start_application(POST_APPLICATION_ADDR);
stema 0:cd3dd72a93f5 44 }
stema 0:cd3dd72a93f5 45
stema 0:cd3dd72a93f5 46 void apply_update(FILE *file, uint32_t address)
stema 0:cd3dd72a93f5 47 {
stema 0:cd3dd72a93f5 48 fseek(file, 0, SEEK_END);
stema 0:cd3dd72a93f5 49 long len = ftell(file);
stema 0:cd3dd72a93f5 50 printf("Firmware size is %ld bytes\r\n", len);
stema 0:cd3dd72a93f5 51 fseek(file, 0, SEEK_SET);
stema 0:cd3dd72a93f5 52
stema 0:cd3dd72a93f5 53 flash.init();
stema 0:cd3dd72a93f5 54
stema 0:cd3dd72a93f5 55 const uint32_t page_size = flash.get_page_size();
stema 0:cd3dd72a93f5 56 char *page_buffer = new char[page_size];
stema 0:cd3dd72a93f5 57 uint32_t addr = address;
stema 0:cd3dd72a93f5 58 uint32_t next_sector = addr + flash.get_sector_size(addr);
stema 0:cd3dd72a93f5 59 bool sector_erased = false;
stema 0:cd3dd72a93f5 60 size_t pages_flashed = 0;
stema 0:cd3dd72a93f5 61 uint32_t percent_done = 0;
stema 0:cd3dd72a93f5 62 while (true) {
stema 0:cd3dd72a93f5 63
stema 0:cd3dd72a93f5 64 // Read data for this page
stema 0:cd3dd72a93f5 65 memset(page_buffer, 0, sizeof(page_buffer));
stema 0:cd3dd72a93f5 66 int size_read = fread(page_buffer, 1, page_size, file);
stema 0:cd3dd72a93f5 67 if (size_read <= 0) {
stema 0:cd3dd72a93f5 68 break;
stema 0:cd3dd72a93f5 69 }
stema 0:cd3dd72a93f5 70
stema 0:cd3dd72a93f5 71 // Erase this page if it hasn't been erased
stema 0:cd3dd72a93f5 72 if (!sector_erased) {
stema 0:cd3dd72a93f5 73 flash.erase(addr, flash.get_sector_size(addr));
stema 0:cd3dd72a93f5 74 sector_erased = true;
stema 0:cd3dd72a93f5 75 }
stema 0:cd3dd72a93f5 76
stema 0:cd3dd72a93f5 77 // Program page
stema 0:cd3dd72a93f5 78 flash.program(page_buffer, addr, page_size);
stema 0:cd3dd72a93f5 79
stema 0:cd3dd72a93f5 80 addr += page_size;
stema 0:cd3dd72a93f5 81 if (addr >= next_sector) {
stema 0:cd3dd72a93f5 82 next_sector = addr + flash.get_sector_size(addr);
stema 0:cd3dd72a93f5 83 sector_erased = false;
stema 0:cd3dd72a93f5 84 }
stema 0:cd3dd72a93f5 85
stema 0:cd3dd72a93f5 86 if (++pages_flashed % 3 == 0) {
stema 0:cd3dd72a93f5 87 uint32_t percent_done_new = ftell(file) * 100 / len;
stema 0:cd3dd72a93f5 88 if (percent_done != percent_done_new) {
stema 0:cd3dd72a93f5 89 percent_done = percent_done_new;
stema 0:cd3dd72a93f5 90 printf("Flashed %3ld%%\r", percent_done);
stema 0:cd3dd72a93f5 91 }
stema 0:cd3dd72a93f5 92 }
stema 0:cd3dd72a93f5 93 }
stema 0:cd3dd72a93f5 94 printf("Flashed 100%%\r\n");
stema 0:cd3dd72a93f5 95
stema 0:cd3dd72a93f5 96 delete[] page_buffer;
stema 0:cd3dd72a93f5 97
stema 0:cd3dd72a93f5 98 flash.deinit();
stema 0:cd3dd72a93f5 99 }
stema 0:cd3dd72a93f5 100