1 files changed, 152 insertions, 0 deletions
diff --git a/testhal/STM32/STM32F4xx/EICU/main.c b/testhal/STM32/STM32F4xx/EICU/main.c
new file mode 100644
index 0000000..4b3d72c
--- /dev/null
+++ b/testhal/STM32/STM32F4xx/EICU/main.c
@@ -0,0 +1,152 @@
+/*
+    ChibiOS/RT - Copyright (C) 2014 Uladzimir Pylinsky aka barthess
+
+    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.
+*/
+
+/*
+ * Make following connections on your discovery board:
+ * PD13-PB4
+ * PD12-PB5
+ * PD14-PB0
+ * PD15-PB1
+ */
+
+#include "ch.h"
+#include "hal.h"
+#include "stdlib.h"
+
+typedef struct {
+  systime_t high;
+  systime_t low;
+  uint32_t pad;
+} pulse_t;
+
+/*
+ * Chose values suitable for measurement using 16-bit timer on 1MHz
+ */
+static pulse_t pulse_led3 = {MS2ST(2), MS2ST(59), GPIOD_LED3};
+static pulse_t pulse_led4 = {MS2ST(3), MS2ST(53), GPIOD_LED4};
+static pulse_t pulse_led5 = {MS2ST(5), MS2ST(47), GPIOD_LED5};
+static pulse_t pulse_led6 = {MS2ST(7), MS2ST(43), GPIOD_LED6};
+
+/*
+ *
+ */
+static THD_WORKING_AREA(PulseThreadWA_LED3, 128);
+static THD_WORKING_AREA(PulseThreadWA_LED4, 128);
+static THD_WORKING_AREA(PulseThreadWA_LED5, 128);
+static THD_WORKING_AREA(PulseThreadWA_LED6, 128);
+
+static THD_FUNCTION(PulseThread, arg) {
+  chRegSetThreadName("Pulse");
+  pulse_t *pulse = arg;
+
+  systime_t t = chVTGetSystemTimeX();
+
+  while (!chThdShouldTerminateX()) {
+    t += pulse->high;
+    palSetPad(GPIOD, pulse->pad);
+    chThdSleepUntil(t);
+    palClearPad(GPIOD, pulse->pad);
+    t+= pulse->low;
+    chThdSleepUntil(t);
+  }
+
+  chThdExit(MSG_OK);
+}
+
+static const int32_t tolerance = 20; // uS
+void eicu_cb(EICUDriver *eicup, eicuchannel_t channel, uint32_t w, uint32_t p) {
+  (void)eicup;
+  (void)p;
+  switch (channel) {
+  case EICU_CHANNEL_1:
+    if (abs((int32_t)w - (int32_t)ST2US(pulse_led3.high)) > tolerance)
+      osalSysHalt("ch1");
+    break;
+  case EICU_CHANNEL_2:
+    if (abs((int32_t)w - (int32_t)ST2US(pulse_led4.high)) > tolerance)
+      osalSysHalt("ch2");
+    break;
+  case EICU_CHANNEL_3:
+    if (abs((int32_t)w - (int32_t)ST2US(pulse_led5.high)) > tolerance)
+      osalSysHalt("ch3");
+    break;
+  case EICU_CHANNEL_4:
+    if (abs((int32_t)w - (int32_t)ST2US(pulse_led6.high)) > tolerance)
+      osalSysHalt("ch4");
+    break;
+  default:
+    osalSysHalt("unhandled case");
+    break;
+  }
+}
+
+static const EICUChannelConfig led3cfg = {
+    EICU_INPUT_ACTIVE_HIGH,
+    EICU_INPUT_PULSE,
+    eicu_cb
+};
+
+static const EICUConfig eicucfg = {
+    1000000,    /* EICU clock frequency in Hz.*/
+    {
+        &led3cfg,
+        &led3cfg,
+        &led3cfg,
+        &led3cfg
+    },
+    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();
+
+  palSetPadMode(GPIOB, GPIOB_PIN0, PAL_MODE_ALTERNATE(2) | PAL_STM32_PUDR_FLOATING);
+  palSetPadMode(GPIOB, GPIOB_PIN1, PAL_MODE_ALTERNATE(2) | PAL_STM32_PUDR_FLOATING);
+  palSetPadMode(GPIOB, GPIOB_PIN4, PAL_MODE_ALTERNATE(2) | PAL_STM32_PUDR_FLOATING);
+  palSetPadMode(GPIOB, GPIOB_PIN5, PAL_MODE_ALTERNATE(2) | PAL_STM32_PUDR_FLOATING);
+
+  eicuStart(&EICUD3, &eicucfg);
+  eicuEnable(&EICUD3);
+
+  osalThreadSleepMicroseconds(10); // need to stabilize input puns
+
+  chThdCreateStatic(PulseThreadWA_LED3, sizeof(PulseThreadWA_LED3),
+                    NORMALPRIO+1, PulseThread, &pulse_led3);
+  chThdCreateStatic(PulseThreadWA_LED4, sizeof(PulseThreadWA_LED4),
+                    NORMALPRIO+1, PulseThread, &pulse_led4);
+  chThdCreateStatic(PulseThreadWA_LED5, sizeof(PulseThreadWA_LED5),
+                    NORMALPRIO+1, PulseThread, &pulse_led5);
+  chThdCreateStatic(PulseThreadWA_LED6, sizeof(PulseThreadWA_LED6),
+                    NORMALPRIO+1, PulseThread, &pulse_led6);
+
+  while (true) {
+    osalThreadSleepMilliseconds(500);
+  }
+
+  return 0;
+}