diff options
Diffstat (limited to 'testhal/STM32/STM32F0xx/COMP/main.c')
| -rw-r--r-- | testhal/STM32/STM32F0xx/COMP/main.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/testhal/STM32/STM32F0xx/COMP/main.c b/testhal/STM32/STM32F0xx/COMP/main.c new file mode 100644 index 0000000..76d5fbd --- /dev/null +++ b/testhal/STM32/STM32F0xx/COMP/main.c @@ -0,0 +1,143 @@ +/*
+ 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
+};
+
+void comp2_cb(COMPDriver *comp) {
+
+ /* Check if output is high (rising) */
+ if (comp->reg->CSR & COMP_CSR_COMPxOUT) {
+
+ palToggleLine(LINE_LED_RED);
+ }
+
+}
+
+static const COMPConfig comp2_conf = {
+ COMP_OUTPUT_NORMAL,
+ COMP_IRQ_RISING,
+ comp2_cb,
+ STM32_COMP_InvertingInput_VREFINT
+};
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+ halInit();
+ chSysInit();
+
+ /*
+ * Set PA3 - PA4 to Analog (DAC1_CH1, COMP2_INP)
+ * You will have to connect these with a jumper wire
+ */
+ palSetPadMode(GPIOA, 3, PAL_MODE_INPUT_ANALOG);
+ palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
+
+ /*
+ * Set PA2 to alternate 8 (COMP2_OUT)
+ * You can connect this to an oscilloscope along with PA4 to compare input/output.
+ */
+ palSetPadMode(GPIOA, 2, PAL_MODE_ALTERNATE(8));
+
+ /*
+ * Start peripherals
+ */
+ dacStart(&DACD1, &dac1cfg1);
+ compStart(&COMPD2, &comp2_conf);
+ gptStart(&GPTD6, &gpt6cfg1);
+
+ /*
+ * Starting a continuous conversion.
+ */
+ dacStartConversion(&DACD1, &dacgrpcfg1, dac_buffer, DAC_BUFFER_SIZE);
+ gptStartContinuous(&GPTD6, 2U);
+
+ compEnable(&COMPD2);
+
+ /*
+ * Normal main() thread activity.
+ */
+ while (true) {
+
+ chThdSleepMilliseconds(250);
+ palToggleLine(LINE_LED_GREEN);
+ }
+ return 0;
+}
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