diff options
| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-08-23 08:11:27 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-08-23 08:11:27 +0000 |
| commit | b5dfe4685f0ac1c31e9dcb2cbcae9f70bc5daa4d (patch) | |
| tree | fef7c9c6d160d318ff7d9aa37ebea4b21242018a /testhal/STM32F4xx/UART/main.c | |
| parent | 960847273c5015002fff1bb7c483556140746de2 (diff) | |
| download | ChibiOS-b5dfe4685f0ac1c31e9dcb2cbcae9f70bc5daa4d.tar.gz ChibiOS-b5dfe4685f0ac1c31e9dcb2cbcae9f70bc5daa4d.tar.bz2 ChibiOS-b5dfe4685f0ac1c31e9dcb2cbcae9f70bc5daa4d.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6206 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'testhal/STM32F4xx/UART/main.c')
| -rw-r--r-- | testhal/STM32F4xx/UART/main.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/testhal/STM32F4xx/UART/main.c b/testhal/STM32F4xx/UART/main.c new file mode 100644 index 000000000..fcd6fa965 --- /dev/null +++ b/testhal/STM32F4xx/UART/main.c @@ -0,0 +1,163 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 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"
+
+static VirtualTimer vt3, vt4, vt5;
+
+static const uint8_t message[] = "0123456789ABCDEF";
+static uint8_t buffer[16];
+
+static void led3off(void *p) {
+
+ (void)p;
+ palClearPad(GPIOD, GPIOD_LED3);
+}
+
+static void led4off(void *p) {
+
+ (void)p;
+ palClearPad(GPIOD, GPIOD_LED4);
+}
+
+static void led5off(void *p) {
+
+ (void)p;
+ palClearPad(GPIOD, GPIOD_LED5);
+}
+
+/*
+ * This callback is invoked when a transmission buffer has been completely
+ * read by the driver.
+ */
+static void txend1(UARTDriver *uartp) {
+
+ (void)uartp;
+}
+
+/*
+ * This callback is invoked when a transmission has physically completed.
+ */
+static void txend2(UARTDriver *uartp) {
+
+ (void)uartp;
+ palSetPad(GPIOD, GPIOD_LED5);
+ chSysLockFromIsr();
+ if (chVTIsArmedI(&vt5))
+ chVTResetI(&vt5);
+ chVTSetI(&vt5, MS2ST(200), led5off, NULL);
+ chSysUnlockFromIsr();
+}
+
+/*
+ * This callback is invoked on a receive error, the errors mask is passed
+ * as parameter.
+ */
+static void rxerr(UARTDriver *uartp, uartflags_t e) {
+
+ (void)uartp;
+ (void)e;
+}
+
+/*
+ * This callback is invoked when a character is received but the application
+ * was not ready to receive it, the character is passed as parameter.
+ */
+static void rxchar(UARTDriver *uartp, uint16_t c) {
+
+ (void)uartp;
+ (void)c;
+ /* Flashing the LED each time a character is received.*/
+ palSetPad(GPIOD, GPIOD_LED4);
+ chSysLockFromIsr();
+ if (chVTIsArmedI(&vt4))
+ chVTResetI(&vt4);
+ chVTSetI(&vt4, MS2ST(200), led4off, NULL);
+ chSysUnlockFromIsr();
+}
+
+/*
+ * This callback is invoked when a receive buffer has been completely written.
+ */
+static void rxend(UARTDriver *uartp) {
+
+ (void)uartp;
+
+ /* Flashing the LED each time a character is received.*/
+ palSetPad(GPIOD, GPIOD_LED3);
+ chSysLockFromIsr();
+ if (chVTIsArmedI(&vt3))
+ chVTResetI(&vt3);
+ chVTSetI(&vt3, MS2ST(200), led3off, NULL);
+ chSysUnlockFromIsr();
+}
+
+/*
+ * UART driver configuration structure.
+ */
+static UARTConfig uart_cfg_1 = {
+ txend1,
+ txend2,
+ rxend,
+ rxchar,
+ rxerr,
+ 38400,
+ 0,
+ USART_CR2_LINEN,
+ 0
+};
+
+/*
+ * Application entry point.
+ */
+int 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();
+
+ /*
+ * Activates the UART driver 2, PA2(TX) and PA3(RX) are routed to USART2.
+ */
+ uartStart(&UARTD2, &uart_cfg_1);
+ palSetPadMode(GPIOA, 2, PAL_MODE_ALTERNATE(7));
+ palSetPadMode(GPIOA, 3, PAL_MODE_ALTERNATE(7));
+
+
+ /*
+ * Normal main() thread activity, in this demo it does nothing.
+ */
+ while (TRUE) {
+ if (palReadPad(GPIOA, GPIOA_BUTTON)) {
+ /*
+ * Starts both a transmission and a receive operations, both will be
+ * handled entirely in background.
+ */
+ uartStopReceive(&UARTD2);
+ uartStopSend(&UARTD2);
+ uartStartReceive(&UARTD2, 16, buffer);
+ uartStartSend(&UARTD2, 16, message);
+ }
+ chThdSleepMilliseconds(500);
+ }
+}
|