Stefano Mammolito
Simple F411 bootloader.
Revision 0:cd3dd72a93f5, committed 2018-04-10
- Comitter:
- stema
- Date:
- Tue Apr 10 08:52:17 2018 +0000
- Commit message:
- Simple F411 SD bootloader.
Changed in this revision
diff -r 000000000000 -r cd3dd72a93f5 .gitignore --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.gitignore Tue Apr 10 08:52:17 2018 +0000 @@ -0,0 +1,4 @@ +.build +.mbed +projectfiles +*.py*
diff -r 000000000000 -r cd3dd72a93f5 README.md --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/README.md Tue Apr 10 08:52:17 2018 +0000 @@ -0,0 +1,57 @@ +# Getting started with Blinky on mbed OS + +This guide reviews the steps required to get Blinky working on an mbed OS platform. + +Please install [mbed CLI](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli). + +## Import the example application + +From the command-line, import the example: + +``` +mbed import mbed-os-example-blinky +cd mbed-os-example-blinky +``` + +### Now compile + +Invoke `mbed compile`, and specify the name of your platform and your favorite toolchain (`GCC_ARM`, `ARM`, `IAR`). For example, for the ARM Compiler 5: + +``` +mbed compile -m K64F -t ARM +``` + +Your PC may take a few minutes to compile your code. At the end, you see the following result: + +``` +[snip] ++----------------------------+-------+-------+------+ +| Module | .text | .data | .bss | ++----------------------------+-------+-------+------+ +| Misc | 13939 | 24 | 1372 | +| core/hal | 16993 | 96 | 296 | +| core/rtos | 7384 | 92 | 4204 | +| features/FEATURE_IPV4 | 80 | 0 | 176 | +| frameworks/greentea-client | 1830 | 60 | 44 | +| frameworks/utest | 2392 | 512 | 292 | +| Subtotals | 42618 | 784 | 6384 | ++----------------------------+-------+-------+------+ +Allocated Heap: unknown +Allocated Stack: unknown +Total Static RAM memory (data + bss): 7168 bytes +Total RAM memory (data + bss + heap + stack): 7168 bytes +Total Flash memory (text + data + misc): 43402 bytes +Image: .\.build\K64F\ARM\mbed-os-example-blinky.bin +``` + +### Program your board + +1. Connect your mbed device to the computer over USB. +1. Copy the binary file to the mbed device. +1. Press the reset button to start the program. + +The LED on your platform turns on and off. + +## Troubleshooting + +If you have problems, you can review the [documentation](https://os.mbed.com/docs/latest/tutorials/debugging.html) for suggestions on what could be wrong and how to fix it.
diff -r 000000000000 -r cd3dd72a93f5 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Apr 10 08:52:17 2018 +0000
@@ -0,0 +1,100 @@
+#include "SDBlockDevice.h"
+#include "FATFileSystem.h"
+
+#define SD_MOUNT_PATH "sd"
+#define FULL_UPDATE_FILE_PATH "/" SD_MOUNT_PATH "/blinky.bin"
+
+#define POST_APPLICATION_ADDR 0x08020000
+
+#if !defined(POST_APPLICATION_ADDR)
+#error "target.restrict_size must be set for your target in mbed_app.json"
+#endif
+
+//Pin order: MOSI, MISO, SCK, CS
+SDBlockDevice sd(SPI_MOSI, SPI_MISO,
+ SPI_SCK, SPI_CS);
+FATFileSystem fs(SD_MOUNT_PATH);
+FlashIAP flash;
+
+void apply_update(FILE *file, uint32_t address);
+
+int main()
+{
+ sd.init();
+ fs.mount(&sd);
+
+ FILE *file = fopen(FULL_UPDATE_FILE_PATH, "rb");
+ if (file != NULL) {
+ printf("Firmware update found\r\n");
+
+ apply_update(file, POST_APPLICATION_ADDR);
+
+ fclose(file);
+ remove(FULL_UPDATE_FILE_PATH);
+ } else {
+ printf("No update found to apply\r\n");
+ }
+
+ fs.unmount();
+ sd.deinit();
+
+ printf("Starting application\r\n");
+
+ mbed_start_application(POST_APPLICATION_ADDR);
+}
+
+void apply_update(FILE *file, uint32_t address)
+{
+ fseek(file, 0, SEEK_END);
+ long len = ftell(file);
+ printf("Firmware size is %ld bytes\r\n", len);
+ fseek(file, 0, SEEK_SET);
+
+ flash.init();
+
+ const uint32_t page_size = flash.get_page_size();
+ char *page_buffer = new char[page_size];
+ uint32_t addr = address;
+ uint32_t next_sector = addr + flash.get_sector_size(addr);
+ bool sector_erased = false;
+ size_t pages_flashed = 0;
+ uint32_t percent_done = 0;
+ while (true) {
+
+ // Read data for this page
+ memset(page_buffer, 0, sizeof(page_buffer));
+ int size_read = fread(page_buffer, 1, page_size, file);
+ if (size_read <= 0) {
+ break;
+ }
+
+ // Erase this page if it hasn't been erased
+ if (!sector_erased) {
+ flash.erase(addr, flash.get_sector_size(addr));
+ sector_erased = true;
+ }
+
+ // Program page
+ flash.program(page_buffer, addr, page_size);
+
+ addr += page_size;
+ if (addr >= next_sector) {
+ next_sector = addr + flash.get_sector_size(addr);
+ sector_erased = false;
+ }
+
+ if (++pages_flashed % 3 == 0) {
+ uint32_t percent_done_new = ftell(file) * 100 / len;
+ if (percent_done != percent_done_new) {
+ percent_done = percent_done_new;
+ printf("Flashed %3ld%%\r", percent_done);
+ }
+ }
+ }
+ printf("Flashed 100%%\r\n");
+
+ delete[] page_buffer;
+
+ flash.deinit();
+}
+
diff -r 000000000000 -r cd3dd72a93f5 mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Tue Apr 10 08:52:17 2018 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#addec7ba10054be03849eff58a1d17f157391e7d
diff -r 000000000000 -r cd3dd72a93f5 sd-driver.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/sd-driver.lib Tue Apr 10 08:52:17 2018 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/coverxit/code/sd-driver/#0df98d0fd2a5