diff options
| author | lonkaars <loek@pipeframe.xyz> | 2023-02-19 16:44:14 +0100 |
|---|---|---|
| committer | lonkaars <loek@pipeframe.xyz> | 2023-02-19 16:44:14 +0100 |
| commit | a18df9f35a1be669abfa67e36aec546f75d43ebe (patch) | |
| tree | bf082f102634c55f6b1191b4cabead0483e16f53 | |
| parent | 3fcd790567bf8ce262dfe7bea0d589cd54234871 (diff) | |
POC donepoc-arbitrary-rom-stm32
| -rw-r--r-- | stm32/main.c | 12 | ||||
| -rw-r--r-- | stm32/makefile | 3 | ||||
| -rw-r--r-- | test/bin/stm32-rom-poc.bs | 2 |
3 files changed, 15 insertions, 2 deletions
diff --git a/stm32/main.c b/stm32/main.c index 14b2a41..fa0ef66 100644 --- a/stm32/main.c +++ b/stm32/main.c @@ -1,5 +1,6 @@ #include <stm32f0xx_hal.h> #include <stm32f0xx_hal_uart.h> +#include <stm32f0xx.h> void error_handler() { __disable_irq(); @@ -38,6 +39,8 @@ void HAL_UART_MspInit(UART_HandleTypeDef *huart) { }); } +const uint32_t* BIG_DATA_PTR = (uint32_t*) 0x0803F800; + void setup() { if (HAL_UART_Init(&huart2) != HAL_OK) return error_handler(); @@ -46,8 +49,13 @@ void setup() { int main() { setup(); - const char test_data[] = "hello world!\r\n"; - HAL_UART_Transmit(&huart2, (uint8_t*) test_data, sizeof(test_data), 100); + HAL_UART_Transmit(&huart2, (uint8_t*) "[", 1, 100); + for (unsigned int i = 0; i < 4; i++) { + uint32_t word = BIG_DATA_PTR[i]; + uint8_t* bytes = (uint8_t*) &word; + HAL_UART_Transmit(&huart2, bytes, 4, 100); + } + HAL_UART_Transmit(&huart2, (uint8_t*) "]", 1, 100); while(1); } diff --git a/stm32/makefile b/stm32/makefile index 22e956e..60cbc15 100644 --- a/stm32/makefile +++ b/stm32/makefile @@ -96,6 +96,9 @@ $(TARGET).elf: $(OBJS) flash: $(TARGET).bin st-flash --reset write $(TARGET).bin 0x08000000 +rom: + st-flash write ../test/bin/stm32-rom-poc.bin 0x0803F800 + compile_commands.json: clean compiledb make -Bn ../scripts/compiledb-full-path-mingw.sh compile_commands.json diff --git a/test/bin/stm32-rom-poc.bs b/test/bin/stm32-rom-poc.bs new file mode 100644 index 0000000..cdd97f5 --- /dev/null +++ b/test/bin/stm32-rom-poc.bs @@ -0,0 +1,2 @@ +68 65 6c 6c 6f 20 77 6f 72 6c 64 0d 0a ; hello world\r\n + |