ChibiOS 2.6.8, until I can figure out where to get it from git.

firmware/chibios/testhal/STM32F1xx/ADC/main.c

@@ -0,0 +1,157 @@
+/*
+    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"
+
+#define ADC_GRP1_NUM_CHANNELS   1
+#define ADC_GRP1_BUF_DEPTH      8
+
+#define ADC_GRP2_NUM_CHANNELS   8
+#define ADC_GRP2_BUF_DEPTH      16
+
+static adcsample_t samples1[ADC_GRP1_NUM_CHANNELS * ADC_GRP1_BUF_DEPTH];
+static adcsample_t samples2[ADC_GRP2_NUM_CHANNELS * ADC_GRP2_BUF_DEPTH];
+
+/*
+ * ADC streaming callback.
+ */
+size_t nx = 0, ny = 0;
+static void adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n) {
+
+  (void)adcp;
+  if (samples2 == buffer) {
+    nx += n;
+  }
+  else {
+    ny += n;
+  }
+}
+
+static void adcerrorcallback(ADCDriver *adcp, adcerror_t err) {
+
+  (void)adcp;
+  (void)err;
+}
+
+/*
+ * ADC conversion group.
+ * Mode:        Linear buffer, 8 samples of 1 channel, SW triggered.
+ * Channels:    IN10.
+ */
+static const ADCConversionGroup adcgrpcfg1 = {
+  FALSE,
+  ADC_GRP1_NUM_CHANNELS,
+  NULL,
+  adcerrorcallback,
+  0, 0,                         /* CR1, CR2 */
+  ADC_SMPR1_SMP_AN10(ADC_SAMPLE_1P5),
+  0,                            /* SMPR2 */
+  ADC_SQR1_NUM_CH(ADC_GRP1_NUM_CHANNELS),
+  0,                            /* SQR2 */
+  ADC_SQR3_SQ1_N(ADC_CHANNEL_IN10)
+};
+
+/*
+ * ADC conversion group.
+ * Mode:        Continuous, 16 samples of 8 channels, SW triggered.
+ * Channels:    IN10, IN11, IN10, IN11, IN10, IN11, Sensor, VRef.
+ */
+static const ADCConversionGroup adcgrpcfg2 = {
+  TRUE,
+  ADC_GRP2_NUM_CHANNELS,
+  adccallback,
+  adcerrorcallback,
+  0, ADC_CR2_TSVREFE,           /* CR1, CR2 */
+  ADC_SMPR1_SMP_AN11(ADC_SAMPLE_41P5) | ADC_SMPR1_SMP_AN10(ADC_SAMPLE_41P5) |
+  ADC_SMPR1_SMP_SENSOR(ADC_SAMPLE_239P5) | ADC_SMPR1_SMP_VREF(ADC_SAMPLE_239P5),
+  0,                            /* SMPR2 */
+  ADC_SQR1_NUM_CH(ADC_GRP2_NUM_CHANNELS),
+  ADC_SQR2_SQ8_N(ADC_CHANNEL_SENSOR) | ADC_SQR2_SQ7_N(ADC_CHANNEL_VREFINT),
+  ADC_SQR3_SQ6_N(ADC_CHANNEL_IN11)   | ADC_SQR3_SQ5_N(ADC_CHANNEL_IN10) |
+  ADC_SQR3_SQ4_N(ADC_CHANNEL_IN11)   | ADC_SQR3_SQ3_N(ADC_CHANNEL_IN10) |
+  ADC_SQR3_SQ2_N(ADC_CHANNEL_IN11)   | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN10)
+};
+
+/*
+ * Red LEDs blinker thread, times are in milliseconds.
+ */
+static WORKING_AREA(waThread1, 128);
+static msg_t Thread1(void *arg) {
+
+  (void)arg;
+  chRegSetThreadName("blinker");
+  while (TRUE) {
+    palClearPad(IOPORT3, GPIOC_LED);
+    chThdSleepMilliseconds(500);
+    palSetPad(IOPORT3, GPIOC_LED);
+    chThdSleepMilliseconds(500);
+  }
+  return 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();
+
+  /*
+   * Setting up analog inputs used by the demo.
+   */
+  palSetGroupMode(GPIOC, PAL_PORT_BIT(0) | PAL_PORT_BIT(1),
+                  0, PAL_MODE_INPUT_ANALOG);
+
+  /*
+   * Creates the blinker thread.
+   */
+  chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
+
+  /*
+   * Activates the ADC1 driver and the temperature sensor.
+   */
+  adcStart(&ADCD1, NULL);
+
+  /*
+   * Linear conversion.
+   */
+  adcConvert(&ADCD1, &adcgrpcfg1, samples1, ADC_GRP1_BUF_DEPTH);
+  chThdSleepMilliseconds(1000);
+
+  /*
+   * Starts an ADC continuous conversion.
+   */
+  adcStartConversion(&ADCD1, &adcgrpcfg2, samples2, ADC_GRP2_BUF_DEPTH);
+
+  /*
+   * Normal main() thread activity, in this demo it does nothing.
+   */
+  while (TRUE) {
+    if (palReadPad(GPIOA, GPIOA_BUTTON))
+      adcStopConversion(&ADCD1);
+    chThdSleepMilliseconds(500);
+  }
+  return 0;
+}