diff --git a/testhal/STM32L1xx/ADC/main.c b/testhal/STM32L1xx/ADC/main.c
index 706ec690e..75729108e 100644
--- a/testhal/STM32L1xx/ADC/main.c
+++ b/testhal/STM32L1xx/ADC/main.c
@@ -49,10 +49,30 @@ static void adcerrorcallback(ADCDriver *adcp, adcerror_t err) {
 
 /*
  * ADC conversion group.
- * Mode:        Streaming, continuous, 16 samples of 8 channels, SW triggered.
+ * Mode:        Linear buffer, 16 samples of 8 channels, SW triggered.
  * Channels:    IN10, IN11, IN10, IN11, IN10, IN11, Sensor, VRef.
  */
-static const ADCConversionGroup adcgrpcfg = {
+static const ADCConversionGroup adcgrpcfg1 = {
+  FALSE,
+  ADC_GRP1_NUM_CHANNELS,
+  NULL,
+  adcerrorcallback,
+  0, 0,         /* CR1, CR2 */
+  0, 0, 0,      /* SMPR1...SMPR3 */
+  ADC_SQR1_NUM_CH(ADC_GRP1_NUM_CHANNELS),
+  0, 0,         /* SQR2, SQR3 */
+  ADC_SQR4_SQ8_N(ADC_CHANNEL_SENSOR) | ADC_SQR4_SQ7_N(ADC_CHANNEL_VREFINT),
+  ADC_SQR5_SQ6_N(ADC_CHANNEL_IN11)   | ADC_SQR5_SQ5_N(ADC_CHANNEL_IN10) |
+  ADC_SQR5_SQ4_N(ADC_CHANNEL_IN11)   | ADC_SQR5_SQ3_N(ADC_CHANNEL_IN10) |
+  ADC_SQR5_SQ2_N(ADC_CHANNEL_IN11)   | ADC_SQR5_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_GRP1_NUM_CHANNELS,
   adccallback,
@@ -110,11 +130,21 @@ int main(void) {
   chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
 
   /*
-   * Starts an ADC continuous conversion.
+   * Activates the ADC1 driver and the thermal sensor.
    */
   adcStart(&ADCD1, NULL);
   adcSTM32EnableTSVREFE();
-  adcStartConversion(&ADCD1, &adcgrpcfg, samples, ADC_GRP1_BUF_DEPTH);
+
+  /*
+   * Linear conversion.
+   */
+  adcConvert(&ADCD1, &adcgrpcfg1, samples, ADC_GRP1_BUF_DEPTH);
+  chThdSleepMilliseconds(1000);
+
+  /*
+   * Starts an ADC continuous conversion.
+   */
+  adcStartConversion(&ADCD1, &adcgrpcfg2, samples, ADC_GRP1_BUF_DEPTH);
 
   /*
    * Normal main() thread activity, in this demo it does nothing.