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stm32f1: other: rtc example is actually for h-103 board

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Move it into the directory already available for this board.
No code changes, just clarifies it a little bit
This commit is contained in:
Karl Palsson
2015-07-16 16:25:46 +00:00
parent 697d4f307a
commit 3a06a8d24c
4 changed files with 0 additions and 0 deletions
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23
examples/stm32/f1/stm32-h103/rtc/Makefile Normal file
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##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library 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 Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = rtc
include ../../Makefile.include

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examples/stm32/f1/stm32-h103/rtc/README.md Normal file
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# README
This is a small RTC example project.

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examples/stm32/f1/stm32-h103/rtc/rtc.c Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Lord James <lordjames@y7mail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/rtc.h>
#include <libopencm3/stm32/usart.h>
#include <libopencm3/stm32/pwr.h>
#include <libopencm3/cm3/nvic.h>
static void clock_setup(void)
{
rcc_clock_setup_in_hse_8mhz_out_72mhz();
/* Enable GPIOC clock. */
rcc_periph_clock_enable(RCC_GPIOC);
/* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */
rcc_periph_clock_enable(RCC_GPIOA);
rcc_periph_clock_enable(RCC_USART1);
}
static 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);
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);
}
static 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);
}
static 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 uint32_t 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_blocking(USART1, '1');
} else {
usart_send_blocking(USART1, '0');
}
}
usart_send_blocking(USART1, '\n');
usart_send_blocking(USART1, '\r');
}
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;
}

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examples/stm32/f1/stm32-h103/rtc/rtc.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for Olimex STM32-H103 (STM32F103RBT6, 128K flash, 20K RAM). */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld