86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ch.h"
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#include "hal.h"
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/*
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* SPI configuration (8MHz, CPHA=0, CPOL=0, MSb first).
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*/
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static ROMCONST SPIConfig spicfg = {
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NULL,
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GPIOD,
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PD_LD10,
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0
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};
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/*
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* Transmit data.
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*/
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static ROMCONST uint8_t digits[32] = {
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0x24, 0xAF, 0xE0, 0xA2, 0x2B, 0x32, 0x30, 0xA7,
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0x20, 0x22, 0x21, 0x38, 0x74, 0xA8, 0x70, 0x71,
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0x04, 0x8F, 0xC0, 0x82, 0x0B, 0x12, 0x10, 0x87,
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0x00, 0x02, 0x01, 0x18, 0x54, 0x88, 0x50, 0x51
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};
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/*
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* Receive buffer.
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*/
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static uint8_t buffer[32];
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/*
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* Entry point.
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*/
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void main(void) {
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/*
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* Board/HAL initialization.
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*/
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hwinit();
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/*
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* OS initialization.
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*/
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chSysInit();
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/*
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* Activates the SPI driver 1 using the driver default configuration.
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*/
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spiStart(&SPID1, &spicfg);
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/*
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* Normal main() thread activity.
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*/
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while (TRUE) {
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volatile uint8_t b;
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chThdSleepMilliseconds(1000);
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/* Exchanging data, if the pins MISO and MOSI are connected then the
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transmitted data is received back into the buffer. On the
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STM8S-Discovery board the pins are CN2-9 and CN2-10.*/
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spiSelect(&SPID1);
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spiExchange(&SPID1, sizeof(digits), digits, buffer);
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/* Polled transfers test.*/
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b = spiPolledExchange(&SPID1, 0x55);
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b = spiPolledExchange(&SPID1, 0xAA);
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spiUnselect(&SPID1);
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}
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}
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