From 9278e9bafd96105b64f9946eb94f5618f01649d3 Mon Sep 17 00:00:00 2001 From: Paul Selkirk Date: Thu, 29 Oct 2015 15:42:29 -0400 Subject: add libhal tests, some cleanup (some mess-making) --- self-test/uart-test.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 self-test/uart-test.c (limited to 'self-test/uart-test.c') diff --git a/self-test/uart-test.c b/self-test/uart-test.c new file mode 100644 index 0000000..8fe7795 --- /dev/null +++ b/self-test/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); + + uart_send_char(c); + DELAY(); + + if (c++ == 'z') { + c = 'a'; + HAL_GPIO_TogglePin(LED_PORT, LED_BLUE); + } + } +} -- cgit v1.2.3