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@@ -14,3 +14,165 @@
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "clueboard60.h"
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+#include "ch.h"
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+#include "hal.h"
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+
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+#define DAC_BUFFER_SIZE 360
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+
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+/*
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+ * DAC test buffer (sine wave).
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+ */
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+static const dacsample_t dac_buffer[DAC_BUFFER_SIZE] = {
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+ 2047, 2082, 2118, 2154, 2189, 2225, 2260, 2296, 2331, 2367, 2402, 2437,
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+ 2472, 2507, 2542, 2576, 2611, 2645, 2679, 2713, 2747, 2780, 2813, 2846,
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+ 2879, 2912, 2944, 2976, 3008, 3039, 3070, 3101, 3131, 3161, 3191, 3221,
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+ 3250, 3278, 3307, 3335, 3362, 3389, 3416, 3443, 3468, 3494, 3519, 3544,
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+ 3568, 3591, 3615, 3637, 3660, 3681, 3703, 3723, 3744, 3763, 3782, 3801,
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+ 3819, 3837, 3854, 3870, 3886, 3902, 3917, 3931, 3944, 3958, 3970, 3982,
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+ 3993, 4004, 4014, 4024, 4033, 4041, 4049, 4056, 4062, 4068, 4074, 4078,
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+ 4082, 4086, 4089, 4091, 4092, 4093, 4094, 4093, 4092, 4091, 4089, 4086,
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+ 4082, 4078, 4074, 4068, 4062, 4056, 4049, 4041, 4033, 4024, 4014, 4004,
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+ 3993, 3982, 3970, 3958, 3944, 3931, 3917, 3902, 3886, 3870, 3854, 3837,
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+ 3819, 3801, 3782, 3763, 3744, 3723, 3703, 3681, 3660, 3637, 3615, 3591,
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+ 3568, 3544, 3519, 3494, 3468, 3443, 3416, 3389, 3362, 3335, 3307, 3278,
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+ 3250, 3221, 3191, 3161, 3131, 3101, 3070, 3039, 3008, 2976, 2944, 2912,
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+ 2879, 2846, 2813, 2780, 2747, 2713, 2679, 2645, 2611, 2576, 2542, 2507,
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+ 2472, 2437, 2402, 2367, 2331, 2296, 2260, 2225, 2189, 2154, 2118, 2082,
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+ 2047, 2012, 1976, 1940, 1905, 1869, 1834, 1798, 1763, 1727, 1692, 1657,
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+ 1622, 1587, 1552, 1518, 1483, 1449, 1415, 1381, 1347, 1314, 1281, 1248,
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+ 1215, 1182, 1150, 1118, 1086, 1055, 1024, 993, 963, 933, 903, 873,
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+ 844, 816, 787, 759, 732, 705, 678, 651, 626, 600, 575, 550,
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+ 526, 503, 479, 457, 434, 413, 391, 371, 350, 331, 312, 293,
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+ 275, 257, 240, 224, 208, 192, 177, 163, 150, 136, 124, 112,
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+ 101, 90, 80, 70, 61, 53, 45, 38, 32, 26, 20, 16,
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+ 12, 8, 5, 3, 2, 1, 0, 1, 2, 3, 5, 8,
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+ 12, 16, 20, 26, 32, 38, 45, 53, 61, 70, 80, 90,
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+ 101, 112, 124, 136, 150, 163, 177, 192, 208, 224, 240, 257,
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+ 275, 293, 312, 331, 350, 371, 391, 413, 434, 457, 479, 503,
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+ 526, 550, 575, 600, 626, 651, 678, 705, 732, 759, 787, 816,
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+ 844, 873, 903, 933, 963, 993, 1024, 1055, 1086, 1118, 1150, 1182,
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+ 1215, 1248, 1281, 1314, 1347, 1381, 1415, 1449, 1483, 1518, 1552, 1587,
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+ 1622, 1657, 1692, 1727, 1763, 1798, 1834, 1869, 1905, 1940, 1976, 2012
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+};
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+
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+/*
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+ * DAC streaming callback.
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+ */
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+size_t nx = 0, ny = 0, nz = 0;
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+static void end_cb1(DACDriver *dacp, const dacsample_t *buffer, size_t n) {
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+
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+ (void)dacp;
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+}
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+
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+
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+/*
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+ * DAC error callback.
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+ */
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+static void error_cb1(DACDriver *dacp, dacerror_t err) {
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+
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+ (void)dacp;
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+ (void)err;
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+
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+ chSysHalt("DAC failure");
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+}
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+
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+
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+static void gpt_cb6(GPTDriver *gptp);
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+static void gpt_cb7(GPTDriver *gptp);
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+
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+/*
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+ * GPT6 configuration.
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+ */
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+GPTConfig gpt6cfg1 = {
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+ .frequency = 110U,
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+ .callback = gpt_cb6,
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+ .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */
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+ .dier = 0U
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+};
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+
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+GPTConfig gpt7cfg1 = {
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+ .frequency = 131U,
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+ .callback = gpt_cb7,
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+ .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */
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+ .dier = 0U
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+};
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+
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+static void gpt_cb6(GPTDriver *gptp) {
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+ palTogglePad(GPIOA, 4);
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+
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+ nz++;
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+
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+ if ((nz % 1000) == 0) {
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+ palTogglePad(GPIOB, 7);
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+ nz = 0;
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+ gpt6cfg1.frequency *= 1.05946;
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+ gptStopTimer(&GPTD6);
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+
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+ gptStart(&GPTD6, &gpt6cfg1);
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+ gptStartContinuous(&GPTD6, 2U);
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+
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+ gpt7cfg1.frequency *= 1.05946;
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+ gptStopTimer(&GPTD7);
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+
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+ gptStart(&GPTD7, &gpt7cfg1);
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+ gptStartContinuous(&GPTD7, 2U);
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+ }
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+}
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+
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+static void gpt_cb7(GPTDriver *gptp) {
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+ palTogglePad(GPIOA, 5);
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+
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+ // ny++;
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+
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+ // if ((ny % 1000) == 0) {
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+ // palTogglePad(GPIOB, 7);
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+ // ny = 0;
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+ // }
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+}
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+
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+
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+
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+
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+static const DACConfig dac1cfg1 = {
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+ .init = 2047U,
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+ .datamode = DAC_DHRM_12BIT_RIGHT,
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+ // .cr = 0
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+};
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+
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+static const DACConversionGroup dacgrpcfg1 = {
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+ .num_channels = 1U,
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+ .end_cb = end_cb1,
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+ .error_cb = error_cb1,
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+ .trigger = DAC_TRG(0)
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+};
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+
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+
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+
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+void matrix_init_kb(void) {
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+ /*
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+ * Starting DAC1 driver, setting up the output pin as analog as suggested
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+ * by the Reference Manual.
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+ */
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+ // palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
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+ palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL);
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+ palSetPadMode(GPIOA, 5, PAL_MODE_OUTPUT_PUSHPULL);
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+ // dacStart(&DACD1, &dac1cfg1);
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+
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+ /*
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+ * Starting GPT6 driver, it is used for triggering the DAC.
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+ */
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+ gptStart(&GPTD6, &gpt6cfg1);
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+ gptStart(&GPTD7, &gpt7cfg1);
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+
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+ /*
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+ * Starting a continuous conversion.
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+ */
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+ // dacStartConversion(&DACD1, &dacgrpcfg1,
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+ // (dacsample_t *)dac_buffer, DAC_BUFFER_SIZE);
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+ gptStartContinuous(&GPTD6, 2U);
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+ gptStartContinuous(&GPTD7, 2U);
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+}
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+
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+void matrix_scan_kb(void) {
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+
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+}
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Jack Humbert