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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"
#include "test.h"
/*
* Conversion table from hex digit to 7 segments encoding, bit 5 controls the
* dot.
* 8 = LU, 4 = RL, 2 = D, 1 = RU, 8 = U, 4 = M, 2 = LL, 1 = L.
*/
static 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
};
/*
* SPI configuration (1MHz, CPHA=0, CPOL=0).
*/
static SPIConfig spicfg = {
NULL,
GPIO1,
GPIO1_SPI0SEL,
CR0_DSS8BIT | CR0_FRFSPI | CR0_CLOCKRATE(0),
48
};
/*
* Red LED blinker thread, times are in milliseconds.
*/
static WORKING_AREA(waThread1, 128);
static msg_t Thread1(void *arg) {
(void)arg;
chRegSetThreadName("blinker1");
while (TRUE) {
palClearPad(GPIO0, GPIO0_LED2);
chThdSleepMilliseconds(500);
palSetPad(GPIO0, GPIO0_LED2);
chThdSleepMilliseconds(500);
}
}
/*
* RGB LED blinker thread, times are in milliseconds.
*/
static WORKING_AREA(waThread2, 128);
static msg_t Thread2(void *arg) {
(void)arg;
chRegSetThreadName("blinker2");
while (TRUE) {
palClearPort(GPIO1, PAL_PORT_BIT(GPIO1_LED3B) |
PAL_PORT_BIT(GPIO1_LED3R) |
PAL_PORT_BIT(GPIO1_LED3G));
chThdSleepMilliseconds(250);
palClearPort(GPIO1, PAL_PORT_BIT(GPIO1_LED3B) |
PAL_PORT_BIT(GPIO1_LED3R) |
PAL_PORT_BIT(GPIO1_LED3G));
palSetPort(GPIO1, PAL_PORT_BIT(GPIO1_LED3B));
chThdSleepMilliseconds(250);
palClearPort(GPIO1, PAL_PORT_BIT(GPIO1_LED3B) |
PAL_PORT_BIT(GPIO1_LED3R) |
PAL_PORT_BIT(GPIO1_LED3G));
palSetPort(GPIO1, PAL_PORT_BIT(GPIO1_LED3R));
chThdSleepMilliseconds(250);
palClearPort(GPIO1, PAL_PORT_BIT(GPIO1_LED3B) |
PAL_PORT_BIT(GPIO1_LED3R) |
PAL_PORT_BIT(GPIO1_LED3G));
palSetPort(GPIO1, PAL_PORT_BIT(GPIO1_LED3G));
chThdSleepMilliseconds(250);
}
}
/*
* Application entry point.
*/
int main(void) {
uint8_t 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();
/*
* Activates the SD1 and SPI1 drivers.
*/
sdStart(&SD1, NULL); /* Default: 38400,8,N,1. */
spiStart(&SPID1, &spicfg);
/*
* Creates the blinker threads.
*/
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
chThdCreateStatic(waThread2, sizeof(waThread2), NORMALPRIO, Thread2, NULL);
/*
* Normal main() thread activity, in this demo it updates the 7-segments
* display on the LPCXpresso main board using the SPI driver.
*/
i = 0;
while (TRUE) {
if (!palReadPad(GPIO0, GPIO0_SW3))
TestThread(&SD1);
spiSelect(&SPID1);
spiSend(&SPID1, 1, &digits[i]); /* Non polled method. */
spiUnselect(&SPID1);
chThdSleepMilliseconds(500);
spiSelect(&SPID1);
spiPolledExchange(&SPID1, digits[i | 0x10]); /* Polled method. */
spiUnselect(&SPID1);
chThdSleepMilliseconds(500);
i = (i + 1) & 15;
}
}
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