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-h103/usart_irq/usart_irq.c | 119 ---------------------- 1 file changed, 119 deletions(-) delete mode 100644 examples/stm32f1/stm32-h103/usart_irq/usart_irq.c (limited to 'examples/stm32f1/stm32-h103/usart_irq/usart_irq.c') diff --git a/examples/stm32f1/stm32-h103/usart_irq/usart_irq.c b/examples/stm32f1/stm32-h103/usart_irq/usart_irq.c deleted file mode 100644 index a2d8eef..0000000 --- a/examples/stm32f1/stm32-h103/usart_irq/usart_irq.c +++ /dev/null @@ -1,119 +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 -#include - -void clock_setup(void) -{ - rcc_clock_setup_in_hse_8mhz_out_72mhz(); - - /* Enable GPIOA clock (for LED GPIOs). */ - 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_APB2ENR_AFIOEN | - RCC_APB2ENR_USART1EN); -} - -void usart_setup(void) -{ - /* Enable the USART1 interrupt. */ - nvic_enable_irq(NVIC_USART1_IRQ); - - /* Setup GPIO pin GPIO_USART1_RE_TX on GPIO port B for transmit. */ - gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, - GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_TX); - - /* Setup GPIO pin GPIO_USART1_RE_RX on GPIO port B for receive. */ - gpio_set_mode(GPIOA, GPIO_MODE_INPUT, - GPIO_CNF_INPUT_FLOAT, GPIO_USART1_RX); - - /* Setup UART parameters. */ - usart_set_baudrate(USART1, 230400, rcc_ppre2_frequency); - usart_set_databits(USART1, 8); - usart_set_stopbits(USART1, USART_STOPBITS_1); - usart_set_parity(USART1, USART_PARITY_NONE); - usart_set_flow_control(USART1, USART_FLOWCONTROL_NONE); - usart_set_mode(USART1, USART_MODE_TX_RX); - - /* Enable USART1 Receive interrupt. */ - USART_CR1(USART1) |= USART_CR1_RXNEIE; - - /* Finally enable the USART. */ - usart_enable(USART1); -} - -void gpio_setup(void) -{ - gpio_set(GPIOC, GPIO12); - - /* Setup GPIO6 and 7 (in GPIO port A) for led use. */ - gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ, - GPIO_CNF_OUTPUT_PUSHPULL, GPIO12); -} - -void usart1_isr(void) -{ - static u8 data = 'A'; - - /* Check if we were called because of RXNE. */ - if (((USART_CR1(USART1) & USART_CR1_RXNEIE) != 0) && - ((USART_SR(USART1) & USART_SR_RXNE) != 0)) { - - /* Indicate that we got data. */ - gpio_toggle(GPIOC, GPIO12); - - /* Retrieve the data from the peripheral. */ - data = usart_recv(USART1); - - /* Enable transmit interrupt so it sends back the data. */ - USART_CR1(USART1) |= USART_CR1_TXEIE; - } - - /* Check if we were called because of TXE. */ - if (((USART_CR1(USART1) & USART_CR1_TXEIE) != 0) && - ((USART_SR(USART1) & USART_SR_TXE) != 0)) { - - /* Indicate that we are sending out data. */ - //gpio_toggle(GPIOA, GPIO7); - - /* Put data into the transmit register. */ - usart_send(USART1, data); - - /* Disable the TXE interrupt as we don't need it anymore. */ - USART_CR1(USART1) &= ~USART_CR1_TXEIE; - } -} - -int main(void) -{ - clock_setup(); - gpio_setup(); - usart_setup(); - - /* Wait forever and do nothing. */ - while (1) - __asm__("nop"); - - return 0; -} -- cgit v1.2.3