mbed-os-examples
/
mbed-os-example-mbed5-bootloader
.
main.cpp@0:8df79c088b12, 2017-03-09 (annotated)
- Committer:
- mbed_official
- Date:
- Thu Mar 09 17:44:16 2017 +0000
- Revision:
- 0:8df79c088b12
- Child:
- 11:d396becb5d76
Initial commit.
Commit copied from https://github.com/ARMmbed/mbed-os-example-bootloader
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 0:8df79c088b12 | 1 | #include "mbed.h" |
mbed_official | 0:8df79c088b12 | 2 | #include "SDBlockDevice.h" |
mbed_official | 0:8df79c088b12 | 3 | #include "FATFileSystem.h" |
mbed_official | 0:8df79c088b12 | 4 | |
mbed_official | 0:8df79c088b12 | 5 | #define UPDATE_FILE "/sd/mbed-os-example-bootloader-blinky_application.bin" |
mbed_official | 0:8df79c088b12 | 6 | |
mbed_official | 0:8df79c088b12 | 7 | SDBlockDevice sd(D11, D12, D13, D10); |
mbed_official | 0:8df79c088b12 | 8 | FATFileSystem fs("sd"); |
mbed_official | 0:8df79c088b12 | 9 | FlashIAP flash; |
mbed_official | 0:8df79c088b12 | 10 | |
mbed_official | 0:8df79c088b12 | 11 | void apply_update(FILE *file, uint32_t address); |
mbed_official | 0:8df79c088b12 | 12 | |
mbed_official | 0:8df79c088b12 | 13 | int main() |
mbed_official | 0:8df79c088b12 | 14 | { |
mbed_official | 0:8df79c088b12 | 15 | sd.init(); |
mbed_official | 0:8df79c088b12 | 16 | fs.mount(&sd); |
mbed_official | 0:8df79c088b12 | 17 | |
mbed_official | 0:8df79c088b12 | 18 | FILE *file = fopen(UPDATE_FILE, "rb"); |
mbed_official | 0:8df79c088b12 | 19 | if (file != NULL) { |
mbed_official | 0:8df79c088b12 | 20 | printf("Firmware update found\r\n"); |
mbed_official | 0:8df79c088b12 | 21 | |
mbed_official | 0:8df79c088b12 | 22 | apply_update(file, POST_APPLICATION_ADDR); |
mbed_official | 0:8df79c088b12 | 23 | |
mbed_official | 0:8df79c088b12 | 24 | fclose(file); |
mbed_official | 0:8df79c088b12 | 25 | remove(UPDATE_FILE); |
mbed_official | 0:8df79c088b12 | 26 | } else { |
mbed_official | 0:8df79c088b12 | 27 | printf("No update found to apply\r\n"); |
mbed_official | 0:8df79c088b12 | 28 | } |
mbed_official | 0:8df79c088b12 | 29 | |
mbed_official | 0:8df79c088b12 | 30 | fs.unmount(); |
mbed_official | 0:8df79c088b12 | 31 | sd.deinit(); |
mbed_official | 0:8df79c088b12 | 32 | |
mbed_official | 0:8df79c088b12 | 33 | printf("Starting application\r\n"); |
mbed_official | 0:8df79c088b12 | 34 | |
mbed_official | 0:8df79c088b12 | 35 | mbed_start_application(POST_APPLICATION_ADDR); |
mbed_official | 0:8df79c088b12 | 36 | } |
mbed_official | 0:8df79c088b12 | 37 | |
mbed_official | 0:8df79c088b12 | 38 | void apply_update(FILE *file, uint32_t address) |
mbed_official | 0:8df79c088b12 | 39 | { |
mbed_official | 0:8df79c088b12 | 40 | flash.init(); |
mbed_official | 0:8df79c088b12 | 41 | |
mbed_official | 0:8df79c088b12 | 42 | const uint32_t page_size = flash.get_page_size(); |
mbed_official | 0:8df79c088b12 | 43 | char *page_buffer = new char[page_size]; |
mbed_official | 0:8df79c088b12 | 44 | uint32_t addr = address; |
mbed_official | 0:8df79c088b12 | 45 | uint32_t next_sector = addr + flash.get_sector_size(addr); |
mbed_official | 0:8df79c088b12 | 46 | bool sector_erased = false; |
mbed_official | 0:8df79c088b12 | 47 | while (true) { |
mbed_official | 0:8df79c088b12 | 48 | |
mbed_official | 0:8df79c088b12 | 49 | // Read data for this page |
mbed_official | 0:8df79c088b12 | 50 | memset(page_buffer, 0, sizeof(page_buffer)); |
mbed_official | 0:8df79c088b12 | 51 | int size_read = fread(page_buffer, 1, page_size, file); |
mbed_official | 0:8df79c088b12 | 52 | if (size_read <= 0) { |
mbed_official | 0:8df79c088b12 | 53 | break; |
mbed_official | 0:8df79c088b12 | 54 | } |
mbed_official | 0:8df79c088b12 | 55 | |
mbed_official | 0:8df79c088b12 | 56 | // Erase this page if it hasn't been erased |
mbed_official | 0:8df79c088b12 | 57 | if (!sector_erased) { |
mbed_official | 0:8df79c088b12 | 58 | flash.erase(addr, flash.get_sector_size(addr)); |
mbed_official | 0:8df79c088b12 | 59 | sector_erased = true; |
mbed_official | 0:8df79c088b12 | 60 | } |
mbed_official | 0:8df79c088b12 | 61 | |
mbed_official | 0:8df79c088b12 | 62 | // Program page |
mbed_official | 0:8df79c088b12 | 63 | flash.program(page_buffer, addr, page_size); |
mbed_official | 0:8df79c088b12 | 64 | |
mbed_official | 0:8df79c088b12 | 65 | addr += page_size; |
mbed_official | 0:8df79c088b12 | 66 | if (addr >= next_sector) { |
mbed_official | 0:8df79c088b12 | 67 | next_sector = addr + flash.get_sector_size(addr); |
mbed_official | 0:8df79c088b12 | 68 | sector_erased = false; |
mbed_official | 0:8df79c088b12 | 69 | |
mbed_official | 0:8df79c088b12 | 70 | } |
mbed_official | 0:8df79c088b12 | 71 | } |
mbed_official | 0:8df79c088b12 | 72 | delete[] page_buffer; |
mbed_official | 0:8df79c088b12 | 73 | |
mbed_official | 0:8df79c088b12 | 74 | flash.deinit(); |
mbed_official | 0:8df79c088b12 | 75 | } |