1 files changed, 132 insertions, 0 deletions

diff --git a/lib/chibios-contrib/testhal/STM32/STM32F3xx/OPAMP/main.c b/lib/chibios-contrib/testhal/STM32/STM32F3xx/OPAMP/main.c
new file mode 100644
index 000000000..fa47b1b43
--- /dev/null
+++ b/lib/chibios-contrib/testhal/STM32/STM32F3xx/OPAMP/main.c
@@ -0,0 +1,132 @@
+/*
+    ChibiOS - Copyright (C) 2006..2015 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 DAC_BUFFER_SIZE 360
+
+/*
+ * DAC test buffer (sine wave).
+ */
+static const dacsample_t dac_buffer[DAC_BUFFER_SIZE] = {
+  2047, 2082, 2118, 2154, 2189, 2225, 2260, 2296, 2331, 2367, 2402, 2437,
+  2472, 2507, 2542, 2576, 2611, 2645, 2679, 2713, 2747, 2780, 2813, 2846,
+  2879, 2912, 2944, 2976, 3008, 3039, 3070, 3101, 3131, 3161, 3191, 3221,
+  3250, 3278, 3307, 3335, 3362, 3389, 3416, 3443, 3468, 3494, 3519, 3544,
+  3568, 3591, 3615, 3637, 3660, 3681, 3703, 3723, 3744, 3763, 3782, 3801,
+  3819, 3837, 3854, 3870, 3886, 3902, 3917, 3931, 3944, 3958, 3970, 3982,
+  3993, 4004, 4014, 4024, 4033, 4041, 4049, 4056, 4062, 4068, 4074, 4078,
+  4082, 4086, 4089, 4091, 4092, 4093, 4094, 4093, 4092, 4091, 4089, 4086,
+  4082, 4078, 4074, 4068, 4062, 4056, 4049, 4041, 4033, 4024, 4014, 4004,
+  3993, 3982, 3970, 3958, 3944, 3931, 3917, 3902, 3886, 3870, 3854, 3837,
+  3819, 3801, 3782, 3763, 3744, 3723, 3703, 3681, 3660, 3637, 3615, 3591,
+  3568, 3544, 3519, 3494, 3468, 3443, 3416, 3389, 3362, 3335, 3307, 3278,
+  3250, 3221, 3191, 3161, 3131, 3101, 3070, 3039, 3008, 2976, 2944, 2912,
+  2879, 2846, 2813, 2780, 2747, 2713, 2679, 2645, 2611, 2576, 2542, 2507,
+  2472, 2437, 2402, 2367, 2331, 2296, 2260, 2225, 2189, 2154, 2118, 2082,
+  2047, 2012, 1976, 1940, 1905, 1869, 1834, 1798, 1763, 1727, 1692, 1657,
+  1622, 1587, 1552, 1518, 1483, 1449, 1415, 1381, 1347, 1314, 1281, 1248,
+  1215, 1182, 1150, 1118, 1086, 1055, 1024,  993,  963,  933,  903,  873,
+   844,  816,  787,  759,  732,  705,  678,  651,  626,  600,  575,  550,
+   526,  503,  479,  457,  434,  413,  391,  371,  350,  331,  312,  293,
+   275,  257,  240,  224,  208,  192,  177,  163,  150,  136,  124,  112,
+   101,   90,   80,   70,   61,   53,   45,   38,   32,   26,   20,   16,
+    12,    8,    5,    3,    2,    1,    0,    1,    2,    3,    5,    8,
+    12,   16,   20,   26,   32,   38,   45,   53,   61,   70,   80,   90,
+   101,  112,  124,  136,  150,  163,  177,  192,  208,  224,  240,  257,
+   275,  293,  312,  331,  350,  371,  391,  413,  434,  457,  479,  503,
+   526,  550,  575,  600,  626,  651,  678,  705,  732,  759,  787,  816,
+   844,  873,  903,  933,  963,  993, 1024, 1055, 1086, 1118, 1150, 1182,
+  1215, 1248, 1281, 1314, 1347, 1381, 1415, 1449, 1483, 1518, 1552, 1587,
+  1622, 1657, 1692, 1727, 1763, 1798, 1834, 1869, 1905, 1940, 1976, 2012
+};
+
+static const DACConfig dac1cfg1 = {
+  .init         = 2047U,
+  .datamode     = DAC_DHRM_12BIT_RIGHT,
+  .cr           = 0
+};
+
+static const DACConversionGroup dacgrpcfg1 = {
+  .num_channels = 1U,
+  .end_cb       = NULL,
+  .error_cb     = NULL,
+  .trigger      = DAC_TRG(0)
+};
+
+/*
+ * GPT6 configuration.
+ */
+static const GPTConfig gpt6cfg1 = {
+  .frequency    = 10000U,
+  .callback     = NULL,
+  .cr2          = TIM_CR2_MMS_1,    /* MMS = 010 = TRGO on Update Event.    */
+  .dier         = 0U
+};
+
+/*
+ * OpAmp configuration.
+ * We will double the input voltage
+ */
+static const OPAMPConfig opamp1_conf = {
+  OPAMP1_CSR_VPSEL_PA01 |  // INP connectd to PA1
+  OPAMP1_CSR_VMSEL_PGA  |  // INM connected to PGA
+  OPAMPx_CSR_PGAGAIN_x2 |  // Gain of 2x
+  OPAMPx_CSR_PGACONNECT_GROUND // PGA connected to ground
+};
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+  halInit();
+  chSysInit();
+
+  /*
+  * Set PA3 - PA1 to Analog (DAC1_CH1, OPAMP1_INP)
+  * You will have to connect these with a jumper wire
+  */
+  palSetPadMode(GPIOA, 3, PAL_MODE_INPUT_ANALOG);
+  palSetPadMode(GPIOA, 1, PAL_MODE_INPUT_ANALOG);
+
+  /*
+   * Start peripherals
+   */
+  dacStart(&DACD1, &dac1cfg1);
+  opampStart(&OPAMPD1, &opamp1_conf);
+  gptStart(&GPTD6, &gpt6cfg1);
+
+  /*
+   * Starting a continuous conversion.
+   */
+  dacStartConversion(&DACD1, &dacgrpcfg1, dac_buffer, DAC_BUFFER_SIZE);
+  gptStartContinuous(&GPTD6, 2U);
+
+  opampEnable(&OPAMPD1);
+  opampCalibrate();
+
+  /*
+   * Normal main() thread activity.
+   */
+  while (true) {
+
+    chThdSleepMilliseconds(250);
+    palToggleLine(LINE_LED3_RED);
+  }
+  return 0;
+}