diff options
| author | utzig <utzig@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-09-02 19:32:00 +0000 |
|---|---|---|
| committer | utzig <utzig@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-09-02 19:32:00 +0000 |
| commit | a852609170014c6152b91ae6b07d46d60159bb43 (patch) | |
| tree | de6031a802e4c9245b5b3569891da824e9cbd638 /testhal/AVR/I2C/main.c | |
| parent | 13cbdd5f4a084053f0b3f07809bf2ae7e418c7d1 (diff) | |
| download | ChibiOS-a852609170014c6152b91ae6b07d46d60159bb43.tar.gz ChibiOS-a852609170014c6152b91ae6b07d46d60159bb43.tar.bz2 ChibiOS-a852609170014c6152b91ae6b07d46d60159bb43.zip | |
[AVR] Add very simple I2C test demo
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7236 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'testhal/AVR/I2C/main.c')
| -rw-r--r-- | testhal/AVR/I2C/main.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/testhal/AVR/I2C/main.c b/testhal/AVR/I2C/main.c new file mode 100644 index 000000000..71a293260 --- /dev/null +++ b/testhal/AVR/I2C/main.c @@ -0,0 +1,68 @@ +/*
+ ChibiOS - Copyright (C) 2006-2014 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 WORKING_AREA(waThread1, 32);
+static msg_t Thread1(void *arg) {
+
+ while (TRUE) {
+ palTogglePad(IOPORT2, PORTB_LED1);
+ chThdSleepMilliseconds(1000);
+ }
+ return 0;
+}
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+ uint8_t tx[3];
+ uint8_t rx[2];
+
+ /*
+ * 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();
+
+ palClearPad(IOPORT2, PORTB_LED1);
+ i2cStart(&I2CD1, NULL);
+
+ /*
+ * Starts the LED blinker thread.
+ */
+ chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
+
+ while (TRUE) {
+ /* Write value 0xAA to address 0 on the 24C64 */
+ tx[0] = 0x00;
+ tx[1] = 0x00;
+ tx[2] = 0xAA;
+ i2cMasterTransmit(&I2CD1, 0x50, tx, 3, NULL, 0);
+
+ /* Send address 0 and read value at that location */
+ i2cMasterTransmit(&I2CD1, 0x50, tx, 2, rx, 1);
+
+ chThdSleepMilliseconds(1000);
+ }
+}
|