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/other/rtc/rtc.c | 116 --------------------------------------- 1 file changed, 116 deletions(-) delete mode 100644 examples/stm32f1/other/rtc/rtc.c (limited to 'examples/stm32f1/other/rtc/rtc.c') diff --git a/examples/stm32f1/other/rtc/rtc.c b/examples/stm32f1/other/rtc/rtc.c deleted file mode 100644 index 28ae24c..0000000 --- a/examples/stm32f1/other/rtc/rtc.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * This file is part of the libopencm3 project. - * - * Copyright (C) 2010 Lord James - * - * 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 -#include -#include - -void clock_setup(void) -{ - rcc_clock_setup_in_hse_8mhz_out_72mhz(); - - /* 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, rcc_ppre2_frequency); - 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 GPIO12 (in GPIO port C) to 'output push-pull'. */ - gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, - GPIO_CNF_OUTPUT_PUSHPULL, GPIO12); -} - -void nvic_setup(void) -{ - /* Without this the RTC interrupt routine will never be called. */ - nvic_enable_irq(NVIC_RTC_IRQ); - nvic_set_priority(NVIC_RTC_IRQ, 1); -} - -void rtc_isr(void) -{ - volatile u32 j = 0, c = 0; - - /* The interrupt flag isn't cleared by hardware, we have to do it. */ - rtc_clear_flag(RTC_SEC); - - /* Visual output. */ - gpio_toggle(GPIOC, GPIO12); - - c = rtc_get_counter_val(); - - /* Display the current counter value in binary via USART1. */ - for (j = 0; j < 32; j++) { - if ((c & (0x80000000 >> j)) != 0) { - usart_send(USART1, '1'); - } else { - usart_send(USART1, '0'); - } - } - usart_send(USART1, '\n'); -} - -int main(void) -{ - clock_setup(); - gpio_setup(); - usart_setup(); - - /* - * If the RTC is pre-configured just allow access, don't reconfigure. - * Otherwise enable it with the LSE as clock source and 0x7fff as - * prescale value. - */ - rtc_auto_awake(LSE, 0x7fff); - - /* Setup the RTC interrupt. */ - nvic_setup(); - - /* Enable the RTC interrupt to occur off the SEC flag. */ - rtc_interrupt_enable(RTC_SEC); - - while(1); - - return 0; -} -- cgit v1.2.3