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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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.
ChibiOS/RT 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 "ch.h"
#include "hal.h"
/*
* SPI configuration (8MHz, CPHA=0, CPOL=0, MSb first).
*/
static ROMCONST SPIConfig spicfg = {
NULL,
GPIOD,
PD_LD10,
0
};
/*
* Transmit data.
*/
static ROMCONST uint8_t digits[32] = {
0x24, 0xAF, 0xE0, 0xA2, 0x2B, 0x32, 0x30, 0xA7,
0x20, 0x22, 0x21, 0x38, 0x74, 0xA8, 0x70, 0x71,
0x04, 0x8F, 0xC0, 0x82, 0x0B, 0x12, 0x10, 0x87,
0x00, 0x02, 0x01, 0x18, 0x54, 0x88, 0x50, 0x51
};
/*
* Receive buffer.
*/
static uint8_t buffer[32];
/*
* Application entry point.
*/
void 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();
/*
* OS initialization.
*/
chSysInit();
/*
* Activates the SPI driver 1 using the driver default configuration.
*/
spiStart(&SPID1, &spicfg);
/*
* Normal main() thread activity.
*/
while (TRUE) {
volatile uint8_t b;
chThdSleepMilliseconds(1000);
/* Exchanging data, if the pins MISO and MOSI are connected then the
transmitted data is received back into the buffer. On the
STM8S-Discovery board the pins are CN2-9 and CN2-10.*/
spiSelect(&SPID1);
spiExchange(&SPID1, sizeof(digits), digits, buffer);
/* Polled transfers test.*/
b = spiPolledExchange(&SPID1, 0x55);
b = spiPolledExchange(&SPID1, 0xAA);
spiUnselect(&SPID1);
}
}
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