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| author | barthess <barthess@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2011-08-09 10:07:11 +0000 |
|---|---|---|
| committer | barthess <barthess@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2011-08-09 10:07:11 +0000 |
| commit | 0752e9d7e973161c32e4b667c7a8d06c68b0a9eb (patch) | |
| tree | ffef0d84a300ba2e30aac20b3e89393d0d5e7bb1 /testhal/STM32F1xx/I2C/main.c | |
| parent | 45b489851878769402af4a353fa2b759c815be39 (diff) | |
| download | ChibiOS-0752e9d7e973161c32e4b667c7a8d06c68b0a9eb.tar.gz ChibiOS-0752e9d7e973161c32e4b667c7a8d06c68b0a9eb.tar.bz2 ChibiOS-0752e9d7e973161c32e4b667c7a8d06c68b0a9eb.zip | |
I2C. Syncing with trunk (step 1)
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/i2c_dev@3214 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'testhal/STM32F1xx/I2C/main.c')
| -rw-r--r-- | testhal/STM32F1xx/I2C/main.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/testhal/STM32F1xx/I2C/main.c b/testhal/STM32F1xx/I2C/main.c new file mode 100644 index 000000000..b828953c5 --- /dev/null +++ b/testhal/STM32F1xx/I2C/main.c @@ -0,0 +1,139 @@ +/**
+ * Lets imagine that we have board with LIS3LV02DL accelerometer on channel #1
+ * and MAX1236 ADC, TMP75 thermometer on channel #2.
+ *
+ * NOTE: I assume, that you have datasheets on all this stuff.
+ *
+ * NOTE: Also, I assume, that you know how to I2C works.
+ *
+ * In order from simplicity to complexity:
+ * TMP75
+ * MAX1236
+ * LIS3LV02DL
+ *
+ * Project splitted to separate source files for each device.
+ *
+ * Data from sensors we will be read from different thread sleeping different
+ * amount of time.
+ */
+
+#include <stdlib.h>
+
+#include "ch.h"
+#include "hal.h"
+
+#include "i2c_pns.h"
+#include "tmp75.h"
+#include "max1236.h"
+#include "lis3.h"
+
+
+
+/*
+ * Red LEDs blinker thread, times are in milliseconds.
+ */
+static WORKING_AREA(BlinkWA, 128);
+static msg_t Blink(void *arg) {
+ (void)arg;
+ while (TRUE) {
+ palClearPad(IOPORT3, GPIOC_LED);
+ chThdSleepMilliseconds(500);
+ palSetPad(IOPORT3, GPIOC_LED);
+ chThdSleepMilliseconds(500);
+ }
+ return 0;
+}
+
+
+
+/* Temperature polling thread */
+static WORKING_AREA(PollTmp75ThreadWA, 128);
+static msg_t PollTmp75Thread(void *arg) {
+ (void)arg;
+ systime_t time = chTimeNow();
+
+ while (TRUE) {
+ time += MS2ST(1001);
+ /* Call reading function */
+ request_temperature();
+ chThdSleepUntil(time);
+ }
+ return 0;
+}
+
+/* MAX1236 polling thread */
+static WORKING_AREA(PollMax1236ThreadWA, 128);
+static msg_t PollMax1236Thread(void *arg) {
+ (void)arg;
+ systime_t time = chTimeNow();
+
+ while (TRUE) {
+ time += MS2ST(200);
+ /* Call reading function */
+ read_max1236();
+ chThdSleepUntil(time);
+ }
+ return 0;
+}
+
+
+static WORKING_AREA(PollAccelThreadWA, 128);
+static msg_t PollAccelThread(void *arg) {
+ (void)arg;
+ systime_t time = chTimeNow();
+
+ while (TRUE) {
+ time += MS2ST(20);
+ request_acceleration_data();
+ chThdSleepUntil(time);
+ }
+ return 0;
+}
+
+
+
+
+/*
+ * Entry point, note, the main() function is already a thread in the system
+ * on entry.
+ */
+int main(void) {
+
+ halInit();
+ chSysInit();
+
+ I2CInit_pns();
+
+ /* Create temperature thread */
+ chThdCreateStatic(PollTmp75ThreadWA,
+ sizeof(PollTmp75ThreadWA),
+ NORMALPRIO,
+ PollTmp75Thread,
+ NULL);
+
+
+ /* Create max1236 thread */
+ chThdCreateStatic(PollMax1236ThreadWA,
+ sizeof(PollMax1236ThreadWA),
+ NORMALPRIO,
+ PollMax1236Thread,
+ NULL);
+
+
+ /* Create accelerometer thread */
+ chThdCreateStatic(PollAccelThreadWA,
+ sizeof(PollAccelThreadWA),
+ HIGHPRIO,
+ PollAccelThread,
+ NULL);
+
+ /* Creates the blinker thread. */
+ chThdCreateStatic(BlinkWA, sizeof(BlinkWA), LOWPRIO, Blink, NULL);
+
+ /* main loop that do nothing */
+ while (TRUE) {
+ chThdSleepMilliseconds(500);
+ }
+
+ return 0;
+}
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