From 39cac7918987fc603dc54886e107af026583592e Mon Sep 17 00:00:00 2001 From: Fredrik Thulin Date: Thu, 15 Jan 2015 17:04:03 +0100 Subject: init --- src/uart-test/main.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 src/uart-test/main.c (limited to 'src/uart-test/main.c') diff --git a/src/uart-test/main.c b/src/uart-test/main.c new file mode 100644 index 0000000..77c17f4 --- /dev/null +++ b/src/uart-test/main.c @@ -0,0 +1,32 @@ +/* + * Test code that just sends the letters 'a' to 'z' over and + * over again using USART1. + * + * Toggles the BLUE LED slowly and the YELLOW LED for every + * character sent. + */ +#include "stm_init.h" + +#define DELAY() HAL_Delay(250) + +int +main() +{ + uint8_t c = 'a'; + uint32_t i = 0; + + stm_init(); + + while (1) + { + HAL_GPIO_TogglePin(LED_PORT, LED_YELLOW); + + HAL_UART_Transmit(&huart1, (uint8_t *) &c, 1, 0xff); + DELAY(); + + if (c++ == 'z') { + c = 'a'; + HAL_GPIO_TogglePin(LED_PORT, LED_BLUE); + } + } +} -- cgit v1.2.3