From 26f12903dab2fafeaaefb02349763618ce96d070 Mon Sep 17 00:00:00 2001 From: Paul Selkirk Date: Mon, 26 Oct 2015 15:18:58 -0400 Subject: Based on user/ft/stm32-dev-bridge, without the project-specific build directories (and duplicated code). --- uart-test.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 uart-test.c (limited to 'uart-test.c') diff --git a/uart-test.c b/uart-test.c new file mode 100644 index 0000000..0f8926a --- /dev/null +++ b/uart-test.c @@ -0,0 +1,34 @@ +/* + * Test code that just sends the letters 'a' to 'z' over and + * over again using USART2. + * + * Toggles the BLUE LED slowly and the RED LED for every + * character sent. + */ +#include "stm32f4xx_hal.h" +#include "stm-init.h" +#include "stm-led.h" +#include "stm-uart.h" + +#define DELAY() HAL_Delay(100) + +int +main() +{ + uint8_t c = 'a'; + + stm_init(); + + while (1) + { + HAL_GPIO_TogglePin(LED_PORT, LED_RED); + + HAL_UART_Transmit(&huart2, (uint8_t *) &c, 1, 0x1); + DELAY(); + + if (c++ == 'z') { + c = 'a'; + HAL_GPIO_TogglePin(LED_PORT, LED_BLUE); + } + } +} -- cgit v1.2.3