From 5e15803cd628ea8eaf66e60c5470628a90a1654e Mon Sep 17 00:00:00 2001 From: Jack Humbert Date: Wed, 9 Aug 2017 22:58:49 -0400 Subject: [PATCH] use gpt for sound generation --- keyboards/clueboard60/clueboard60.c | 163 +++++++--------------------- 1 file changed, 37 insertions(+), 126 deletions(-) diff --git a/keyboards/clueboard60/clueboard60.c b/keyboards/clueboard60/clueboard60.c index b721518d..2e830962 100644 --- a/keyboards/clueboard60/clueboard60.c +++ b/keyboards/clueboard60/clueboard60.c @@ -17,88 +17,33 @@ #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 -}; - /* * DAC streaming callback. */ size_t nx = 0, ny = 0, nz = 0; -static void end_cb1(DACDriver *dacp, const dacsample_t *buffer, size_t n) { - - (void)dacp; -} - -/* - * DAC error callback. - */ - -static void error_cb1(DACDriver *dacp, dacerror_t err) { - - (void)dacp; - (void)err; - chSysHalt("DAC failure"); -} - - -// static void gpt_cb6(GPTDriver *gptp); -// static void gpt_cb7(GPTDriver *gptp); +static void gpt_cb6(GPTDriver *gptp); +static void gpt_cb7(GPTDriver *gptp); static void gpt_cb8(GPTDriver *gptp); -float frequency[2] = { 110.00, 130.81 }; +float frequency[2] = { 440.00, 523.25 }; /* * GPT6 configuration. */ GPTConfig gpt6cfg1 = { - .frequency = 110.00*DAC_BUFFER_SIZE, + .frequency = 440.00, // .frequency = 1000000, - // .callback = gpt_cb6, - .callback = NULL, + .callback = gpt_cb6, + // .callback = NULL, .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */ .dier = 0U }; GPTConfig gpt7cfg1 = { - .frequency = 130.81*DAC_BUFFER_SIZE, - // .callback = gpt_cb7, - .callback = NULL, + .frequency = 523.25, + .callback = gpt_cb7, + // .callback = NULL, .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */ .dier = 0U }; @@ -110,44 +55,44 @@ GPTConfig gpt8cfg1 = { .dier = 0U }; -// static void gpt_cb6(GPTDriver *gptp) { -// palTogglePad(GPIOA, 4); +static void gpt_cb6(GPTDriver *gptp) { + palTogglePad(GPIOA, 4); -// nz++; + // nz++; -// if ((nz % 1000) == 0) { -// palTogglePad(GPIOB, 7); -// nz = 0; -// gpt6cfg1.frequency *= 1.05946; -// gptStopTimer(&GPTD6); + // if ((nz % 1000) == 0) { + // palTogglePad(GPIOB, 7); + // nz = 0; + // gpt6cfg1.frequency *= 1.05946; + // gptStopTimer(&GPTD6); -// gptStart(&GPTD6, &gpt6cfg1); -// gptStartContinuous(&GPTD6, 2U); + // gptStart(&GPTD6, &gpt6cfg1); + // gptStartContinuous(&GPTD6, 2U); -// gpt7cfg1.frequency *= 1.05946; -// gptStopTimer(&GPTD7); + // gpt7cfg1.frequency *= 1.05946; + // gptStopTimer(&GPTD7); -// gptStart(&GPTD7, &gpt7cfg1); -// gptStartContinuous(&GPTD7, 2U); -// } -// } + // gptStart(&GPTD7, &gpt7cfg1); + // gptStartContinuous(&GPTD7, 2U); + // } +} -// static void gpt_cb7(GPTDriver *gptp) { -// palTogglePad(GPIOA, 5); +static void gpt_cb7(GPTDriver *gptp) { + palTogglePad(GPIOA, 5); -// // ny++; + // ny++; -// // if ((ny % 1000) == 0) { -// // palTogglePad(GPIOB, 7); -// // ny = 0; -// // } -// } + // if ((ny % 1000) == 0) { + // palTogglePad(GPIOB, 7); + // ny = 0; + // } +} static void gpt_cb8(GPTDriver *gptp) { nz++; - if ((nz % 5000) == 0) { + if (nz == 5000) { palTogglePad(GPIOB, 7); nz = 0; frequency[0] *= 1.05946; @@ -169,49 +114,15 @@ static void gpt_cb8(GPTDriver *gptp) { } +void matrix_init_kb(void) { -static const DACConfig dac1cfg1 = { - .init = 2047U, - .datamode = DAC_DHRM_12BIT_RIGHT, - // .datamode = DAC_DHRM_12BIT_RIGHT_DUAL, - // .cr = 0 -}; - -static const DACConversionGroup dacgrpcfg1 = { - .num_channels = 2U, - .end_cb = end_cb1, - .error_cb = error_cb1, - .trigger = DAC_TRG(0) -}; - - + palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL); + palSetPadMode(GPIOA, 5, PAL_MODE_OUTPUT_PUSHPULL); -void matrix_init_kb(void) { - /* - * Starting DAC1 driver, setting up the output pin as analog as suggested - * by the Reference Manual. - */ - palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG); - palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG); - // palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL); - // palSetPadMode(GPIOA, 5, PAL_MODE_OUTPUT_PUSHPULL); - dacStart(&DACD1, &dac1cfg1); - dacStart(&DACD2, &dac1cfg1); - - /* - * Starting GPT6 driver, it is used for triggering the DAC. - */ gptStart(&GPTD6, &gpt6cfg1); gptStart(&GPTD7, &gpt7cfg1); gptStart(&GPTD8, &gpt8cfg1); - /* - * Starting a continuous conversion. - */ - dacStartConversion(&DACD1, &dacgrpcfg1, - (dacsample_t *)dac_buffer, DAC_BUFFER_SIZE); - dacStartConversion(&DACD2, &dacgrpcfg1, - (dacsample_t *)dac_buffer, DAC_BUFFER_SIZE); gptStartContinuous(&GPTD6, 2U); gptStartContinuous(&GPTD7, 2U); gptStartContinuous(&GPTD8, 2U);