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SPI test (untested)

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This commit is contained in:
Henry Hallam 2011-09-22 16:04:42 -07:00
parent 309beb251a
commit 16a481034f
3 changed files with 176 additions and 0 deletions
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23
examples/stm32f2/jobygps/spi_test/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 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 <http://www.gnu.org/licenses/>.
##
BINARY = spi_test
include ../../Makefile.include

122
examples/stm32f2/jobygps/spi_test/spi_test.c Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>,
* 2011 Piotr Esden-Tempski <piotr@esden.net>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/spi.h>
#include <libopencm3/stm32/usart.h>
#include <libopencm3/stm32/nvic.h>
#include <libopencm3/stm32/f2/gpio.h>
#include <libopencm3/stm32/f2/rcc.h>
#include <stdio.h>
#include <errno.h>
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);
RCC_APB1ENR |= RCC_APB1ENR_SPI2EN;
RCC_APB2ENR |= RCC_APB2ENR_USART1EN;
RCC_AHB1ENR |= RCC_AHB1ENR_GPIOCEN | RCC_AHB1ENR_GPIOAEN; // PORT B not enabled...
}
void spi_setup(void)
{
gpio_mode_setup(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO12 | GPIO13 | GPIO14 | GPIO15);
/* Setup SPI parameters. */
spi_init_master(SPI2, SPI_CR1_BAUDRATE_FPCLK_DIV_256, SPI_CR1_CPOL, SPI_CR1_CPHA, SPI_CR1_DFF_8BIT, SPI_CR1_MSBFIRST);
/* Finally enable the SPI. */
spi_enable(SPI2);
}
void usart_setup(void)
{
gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO9);
//GPIO_MODER(GPIOA) |= GPIO_MODE(9, GPIO_MODE_AF);
//gpio_set_af(GPIOA, GPIO_AF7, GPIO9|GPIO10);
/* Setup UART parameters. */
usart_set_baudrate(USART1, 9600, 16000000);
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);
/* Finally enable the USART. */
usart_enable(USART1);
}
void gpio_setup(void)
{
gpio_set(GPIOC, GPIO3);
/* Setup GPIO6 and 7 (in GPIO port A) for led use. */
gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT,
GPIO_MODE_OUTPUT, GPIO3);
}
int _write (int file, char *ptr, int len)
{
int i;
if (file == 1) {
for (i = 0; i < len; i++){
usart_send_blocking(USART1, ptr[i]);
}
return i;
}
errno = EIO;
return -1;
}
int main(void)
{
int counter = 0;
clock_setup();
gpio_setup();
usart_setup();
spi_setup();
/*
* Write Hello World an integer, float and double all over
* again while incrementing the numbers.
*/
while (1) {
gpio_toggle(GPIOC, GPIO3);
printf("Hello World! %i\r\n", counter);
counter++;
spi_send(SPI2,(u8)counter);
}
return 0;
}

31
examples/stm32f2/jobygps/spi_test/spi_test.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 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 <http://www.gnu.org/licenses/>.
*/
/* Linker script for Open-BLDC (STM32F103CBT6, 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_stm32.ld