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/*
ChibiOS - Copyright (C) 2006..2016 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 "portab.h"
/*
* SPI TX and RX buffers.
*/
static uint8_t txbuf[512];
static uint8_t rxbuf[512];
/*
* 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) {
spiAcquireBus(&PORTAB_SPI1); /* Acquire ownership of the bus. */
palWriteLine(PORTAB_LINE_LED1, PORTAB_LED_ON);
spiStart(&PORTAB_SPI1, &hs_spicfg); /* Setup transfer parameters. */
spiSelect(&PORTAB_SPI1); /* Slave Select assertion. */
spiExchange(&PORTAB_SPI1, 512,
txbuf, rxbuf); /* Atomic transfer operations. */
spiUnselect(&PORTAB_SPI1); /* Slave Select de-assertion. */
spiReleaseBus(&PORTAB_SPI1); /* Ownership release. */
}
}
/*
* SPI bus contender 2.
*/
static THD_WORKING_AREA(spi_thread_2_wa, 256);
static THD_FUNCTION(spi_thread_2, p) {
(void)p;
chRegSetThreadName("SPI thread 2");
while (true) {
spiAcquireBus(&PORTAB_SPI1); /* Acquire ownership of the bus. */
palWriteLine(PORTAB_LINE_LED1, PORTAB_LED_OFF);
spiStart(&PORTAB_SPI1, &ls_spicfg); /* Setup transfer parameters. */
spiSelect(&PORTAB_SPI1); /* Slave Select assertion. */
spiExchange(&PORTAB_SPI1, 512,
txbuf, rxbuf); /* Atomic transfer operations. */
spiUnselect(&PORTAB_SPI1); /* Slave Select de-assertion. */
spiReleaseBus(&PORTAB_SPI1); /* Ownership release. */
}
}
#if defined(PORTAB_LINE_LED2)
/*
* LED blinker thread, times are in milliseconds.
*/
static THD_WORKING_AREA(waThread1, 128);
static THD_FUNCTION(Thread1, arg) {
(void)arg;
chRegSetThreadName("blinker");
while (true) {
systime_t time = palReadLine(PORTAB_LINE_BUTTON) == PORTAB_BUTTON_PRESSED ? 250 : 500;
palToggleLine(PORTAB_LINE_LED2);
chThdSleepMilliseconds(time);
}
}
#endif
/*
* Application entry point.
*/
int main(void) {
unsigned i;
/*
* 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();
/*
* Board-dependent GPIO setup code.
*/
portab_setup();
/*
* Prepare transmit pattern.
*/
for (i = 0; i < sizeof(txbuf); i++)
txbuf[i] = (uint8_t)i;
/*
* Starting the transmitter and receiver threads.
*/
chThdCreateStatic(spi_thread_1_wa, sizeof(spi_thread_1_wa),
NORMALPRIO + 1, spi_thread_1, NULL);
chThdCreateStatic(spi_thread_2_wa, sizeof(spi_thread_2_wa),
NORMALPRIO + 1, spi_thread_2, NULL);
#if defined(PORTAB_LINE_LED2)
/*
* Creates the blinker thread.
*/
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
#endif
/*
* Normal main() thread activity, in this demo it does nothing.
*/
while (true) {
chThdSleepMilliseconds(500);
}
return 0;
}
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