142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012 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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#include "test.h"
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/*
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* Conversion table from hex digit to 7 segments encoding, bit 5 controls the
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* dot.
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* 8 = LU, 4 = RL, 2 = D, 1 = RU, 8 = U, 4 = M, 2 = LL, 1 = L.
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*/
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static 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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* SPI configuration (1MHz, CPHA=0, CPOL=0).
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*/
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static SPIConfig spicfg = {
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NULL,
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GPIO0,
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GPIO0_SPI0SEL,
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CR0_DSS8BIT | CR0_FRFSPI | CR0_CLOCKRATE(0),
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48
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};
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/*
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* Red LED blinker thread, times are in milliseconds.
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*/
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static WORKING_AREA(waThread1, 128);
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static msg_t Thread1(void *arg) {
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(void)arg;
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chRegSetThreadName("blinker1");
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while (TRUE) {
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palClearPad(GPIO0, GPIO0_LED2);
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chThdSleepMilliseconds(500);
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palSetPad(GPIO0, GPIO0_LED2);
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chThdSleepMilliseconds(500);
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}
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}
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/*
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* RGB LED blinker thread, times are in milliseconds.
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*/
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static WORKING_AREA(waThread2, 128);
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static msg_t Thread2(void *arg) {
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(void)arg;
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chRegSetThreadName("blinker2");
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while (TRUE) {
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palClearPort(GPIO0, PAL_PORT_BIT(GPIO0_LED3B) |
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PAL_PORT_BIT(GPIO0_LED3R) |
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PAL_PORT_BIT(GPIO0_LED3G));
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chThdSleepMilliseconds(250);
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palClearPort(GPIO0, PAL_PORT_BIT(GPIO0_LED3B) |
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PAL_PORT_BIT(GPIO0_LED3R) |
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PAL_PORT_BIT(GPIO0_LED3G));
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palSetPort(GPIO0, PAL_PORT_BIT(GPIO0_LED3B));
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chThdSleepMilliseconds(250);
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palClearPort(GPIO0, PAL_PORT_BIT(GPIO0_LED3B) |
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PAL_PORT_BIT(GPIO0_LED3R) |
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PAL_PORT_BIT(GPIO0_LED3G));
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palSetPort(GPIO0, PAL_PORT_BIT(GPIO0_LED3R));
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chThdSleepMilliseconds(250);
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palClearPort(GPIO1, PAL_PORT_BIT(GPIO0_LED3B) |
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PAL_PORT_BIT(GPIO0_LED3R) |
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PAL_PORT_BIT(GPIO0_LED3G));
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palSetPort(GPIO0, PAL_PORT_BIT(GPIO0_LED3G));
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chThdSleepMilliseconds(250);
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}
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}
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/*
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* Application entry point.
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*/
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int main(void) {
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uint8_t i;
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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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chSysInit();
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/*
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* Activates the SD1 and SPI1 drivers.
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*/
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sdStart(&SD1, NULL); /* Default: 38400,8,N,1. */
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spiStart(&SPID1, &spicfg);
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/*
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* Creates the blinker threads.
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*/
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chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
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chThdCreateStatic(waThread2, sizeof(waThread2), NORMALPRIO, Thread2, NULL);
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/*
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* Normal main() thread activity, in this demo it updates the 7-segments
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* display on the LPCXpresso main board using the SPI driver.
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*/
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i = 0;
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while (TRUE) {
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if (!palReadPad(GPIO0, GPIO0_SW3))
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TestThread(&SD1);
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spiSelect(&SPID1);
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spiSend(&SPID1, 1, &digits[i]); /* Non polled method. */
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spiUnselect(&SPID1);
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chThdSleepMilliseconds(500);
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spiSelect(&SPID1);
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spiPolledExchange(&SPID1, digits[i | 0x10]); /* Polled method. */
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spiUnselect(&SPID1);
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chThdSleepMilliseconds(500);
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i = (i + 1) & 15;
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}
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}
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