With ChibiStudio I have the running LED Demo Project working, now I wanted to get the SPI to work. I jused the SPI Example from the HAL examples and added it to the SMT32F767 Demo Project. SPI HAL driver was enabled I also set the SPI STM32_SPI_USE_SPI2.
Now, the SPI Threads do nothing, the Thread is not being executed (I tested it with toggling an LED there). I also connected an Osci to the D13 Port. What am I doing wrong?
I disabled the Blinker Thread, enabling that makes the LED Blink though, just to show my program compiles and start properly.
Code: Select all
/*
ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include "ch.h"
#include "hal.h"
#include "rt_test_root.h"
#include "oslib_test_root.h"
/*===========================================================================*/
/* SPI driver related. */
/*===========================================================================*/
/*
* Low speed SPI configuration (421.875kHz, CPHA=0, CPOL=0, MSb first).
*/
static const SPIConfig ls_spicfg = {
false,
NULL,
GPIOB,
GPIOB_ARD_D14,
SPI_CR1_BR_2 | SPI_CR1_BR_1,
SPI_CR2_DS_2 | SPI_CR2_DS_1 | SPI_CR2_DS_0
};
/*
* SPI TX and RX buffers.
* Note, the buffer are aligned to a 32 bytes boundary because limitations
* imposed by the data cache. Note, this is GNU specific, it must be
* handled differently for other compilers.
*/
#define SPI_BUFFERS_SIZE 128U
static uint8_t txbuf[SPI_BUFFERS_SIZE];
static uint8_t rxbuf[SPI_BUFFERS_SIZE];
/*
* SPI bus contender 1.
*/
static THD_WORKING_AREA(spi_thread_1_wa, 256);
static THD_FUNCTION(spi_thread_1, p) {
(void)p;
chRegSetThreadName("SPI thread 1");
while (true) {
unsigned i;
palSetLine(LINE_LED1);
chThdSleepMilliseconds(200);
palClearLine(LINE_LED1);
chThdSleepMilliseconds(200);
/* Bush acquisition and SPI reprogramming.*/
spiAcquireBus(&SPID2);
spiStart(&SPID2, &ls_spicfg);
/* Preparing data buffer and flushing cache.*/
for (i = 0; i < SPI_BUFFERS_SIZE; i++)
txbuf[i] = (uint8_t)i;
/* Slave selection and data exchange.*/
spiSelect(&SPID2);
//spiExchange(&SPID2, SPI_BUFFERS_SIZE, txbuf, rxbuf);
spiSend(&SPID2, SPI_BUFFERS_SIZE, txbuf);
spiUnselect(&SPID2);
/* Releasing the bus.*/
spiReleaseBus(&SPID2);
}
}
/*
* This is a periodic thread that does absolutely nothing except flashing
* a LED.
*/
static THD_WORKING_AREA(waThread1, 128);
static THD_FUNCTION(Thread1, arg) {
(void)arg;
chRegSetThreadName("blinker");
while (true) {
palSetLine(LINE_LED1);
chThdSleepMilliseconds(50);
palSetLine(LINE_LED2);
chThdSleepMilliseconds(50);
palSetLine(LINE_LED3);
chThdSleepMilliseconds(200);
palClearLine(LINE_LED1);
chThdSleepMilliseconds(50);
palClearLine(LINE_LED2);
chThdSleepMilliseconds(50);
palClearLine(LINE_LED3);
chThdSleepMilliseconds(200);
}
}
/*
* Application entry point.
*/
int main(void) {
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
chSysInit();
/*
* SPI2 I/O pins setup.
*/
palSetLineMode(LINE_ARD_D13,
PAL_MODE_ALTERNATE(5) |
PAL_STM32_OSPEED_HIGHEST); /* SPI SCK. */
palSetLineMode(LINE_ARD_D12,
PAL_MODE_ALTERNATE(5) |
PAL_STM32_OSPEED_HIGHEST); /* MISO. */
palSetLineMode(LINE_ARD_D11,
PAL_MODE_ALTERNATE(5) |
PAL_STM32_OSPEED_HIGHEST); /* MOSI. */
palSetLine(LINE_ARD_D15);
palSetLineMode(LINE_ARD_D15,
PAL_MODE_OUTPUT_PUSHPULL); /* CS0. */
palSetLine(LINE_ARD_D14);
palSetLineMode(LINE_ARD_D14,
PAL_MODE_OUTPUT_PUSHPULL); /* CS1. */
/*
* Activates the serial driver 3 using the driver default configuration.
*/
sdStart(&SD3, NULL);
/*
* Creates the example thread.
*/
// chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO + 1, Thread1, NULL);
chThdCreateStatic(spi_thread_1_wa, sizeof(spi_thread_1_wa),
NORMALPRIO, spi_thread_1, NULL);
/*
* Normal main() thread activity, in this demo it does nothing except
* sleeping in a loop and check the button state.
*/
while (true) {
chThdSleepMilliseconds(500);
}
}
Debugging shows that the Code never returns after the first spiSend().
