From 580d25a84baaa160b0afdc096e9aa1e8ca1c2d2b Mon Sep 17 00:00:00 2001 From: Stephen Caudle Date: Mon, 31 Oct 2011 00:16:37 -0400 Subject: Move STM32 example projects in family specific folders --- examples/stm32f1/stm32-discovery/usart/usart.c | 87 -------------------------- 1 file changed, 87 deletions(-) delete mode 100644 examples/stm32f1/stm32-discovery/usart/usart.c (limited to 'examples/stm32f1/stm32-discovery/usart/usart.c') diff --git a/examples/stm32f1/stm32-discovery/usart/usart.c b/examples/stm32f1/stm32-discovery/usart/usart.c deleted file mode 100644 index 942805b..0000000 --- a/examples/stm32f1/stm32-discovery/usart/usart.c +++ /dev/null @@ -1,87 +0,0 @@ -/* - * This file is part of the libopencm3 project. - * - * Copyright (C) 2009 Uwe Hermann - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -#include -#include -#include - -void clock_setup(void) -{ - rcc_clock_setup_in_hse_8mhz_out_24mhz(); - - /* Enable GPIOC clock. */ - rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN); - - /* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */ - rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN); - rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_USART1EN); -} - -void usart_setup(void) -{ - /* Setup GPIO pin GPIO_USART1_TX/GPIO9 on GPIO port A for transmit. */ - gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, - GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_TX); - - /* Setup UART parameters. */ - // usart_set_baudrate(USART1, 38400); - /* TODO usart_set_baudrate() doesn't support 24MHz clock (yet). */ - /* This is the equivalent: */ - USART_BRR(USART1) = (u16)((24000000 << 4) / (38400 * 16)); - - usart_set_databits(USART1, 8); - usart_set_stopbits(USART1, USART_STOPBITS_1); - usart_set_mode(USART1, USART_MODE_TX); - usart_set_parity(USART1, USART_PARITY_NONE); - usart_set_flow_control(USART1, USART_FLOWCONTROL_NONE); - - /* Finally enable the USART. */ - usart_enable(USART1); -} - -void gpio_setup(void) -{ - /* Set GPIO9 (in GPIO port C) to 'output push-pull'. [LED] */ - gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, - GPIO_CNF_OUTPUT_PUSHPULL, GPIO9); -} - -int main(void) -{ - int i, j = 0, c = 0; - - clock_setup(); - gpio_setup(); - usart_setup(); - - /* Blink the LED (PC9) on the board with every transmitted byte. */ - while (1) { - gpio_toggle(GPIOC, GPIO9); /* LED on/off */ - usart_send_blocking(USART1, c + '0'); /* USART1: Send byte. */ - c = (c == 9) ? 0 : c + 1; /* Increment c. */ - if ((j++ % 80) == 0) { /* Newline after line full. */ - usart_send_blocking(USART1, '\r'); - usart_send_blocking(USART1, '\n'); - } - for (i = 0; i < 800000; i++) /* Wait a bit. */ - __asm__("NOP"); - } - - return 0; -} -- cgit v1.2.3