X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fdrivers%2Fao_ms5607.c;h=288d14ed23d1b00f269055423d5c3aa7bdfb6bb0;hp=4594f07ceeddfccd3311eb0b8e8ee077e13be89e;hb=ff7fa802f632700f73418246f1be5017ac0a09b4;hpb=1541fc0bde71f503b1ae5757497e9e1e6d023111 diff --git a/src/drivers/ao_ms5607.c b/src/drivers/ao_ms5607.c index 4594f07c..288d14ed 100644 --- a/src/drivers/ao_ms5607.c +++ b/src/drivers/ao_ms5607.c @@ -3,7 +3,8 @@ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of @@ -16,21 +17,26 @@ */ #include -#include "ao_ms5607.h" +#include +#include -static struct ms5607_prom ms5607_prom; -static uint8_t ms5607_configured; +#if HAS_MS5607 || HAS_MS5611 + +struct ao_ms5607_prom ao_ms5607_prom; +static uint8_t ms5607_configured; + +#ifndef AO_MS5607_SPI_SPEED +#define AO_MS5607_SPI_SPEED AO_SPI_SPEED_FAST +#endif static void ao_ms5607_start(void) { - ao_spi_get(AO_MS5607_SPI_INDEX); - stm_gpio_set(&AO_MS5607_CS_GPIO, AO_MS5607_CS, 0); + ao_spi_get_bit(AO_MS5607_CS_PORT, AO_MS5607_CS_PIN, AO_MS5607_SPI_INDEX, AO_MS5607_SPI_SPEED); } static void ao_ms5607_stop(void) { - stm_gpio_set(&AO_MS5607_CS_GPIO, AO_MS5607_CS, 1); - ao_spi_put(AO_MS5607_SPI_INDEX); + ao_spi_put_bit(AO_MS5607_CS_PORT, AO_MS5607_CS_PIN, AO_MS5607_SPI_INDEX); } static void @@ -50,12 +56,12 @@ ao_ms5607_crc(uint8_t *prom) uint8_t crc_byte = prom[15]; uint8_t cnt; uint16_t n_rem = 0; - uint16_t crc_read; uint8_t n_bit; + uint8_t *p = prom; prom[15] = 0; for (cnt = 0; cnt < 16; cnt++) { - n_rem ^= prom[cnt]; + n_rem ^= *p++; for (n_bit = 8; n_bit > 0; n_bit--) { if (n_rem & 0x8000) n_rem = (n_rem << 1) ^ 0x3000; @@ -68,11 +74,32 @@ ao_ms5607_crc(uint8_t *prom) return n_rem; } +static bool +ao_ms5607_prom_valid(uint8_t *prom) +{ + uint8_t crc; + int i; + uint8_t *p; + + /* Look for a value other than 0x0000 or 0xffff */ + p = prom; + for (i = 0; i < 16; i++) + if (*p++ + 1 > 1) + break; + if (i == 16) + return false; + + crc = ao_ms5607_crc(prom); + if (crc != (prom[15] & 0xf)) + return false; + + return true; +} + static void -ao_ms5607_prom_read(struct ms5607_prom *prom) +ao_ms5607_prom_read(struct ao_ms5607_prom *prom) { uint8_t addr; - uint8_t crc; uint16_t *r; r = (uint16_t *) prom; @@ -84,40 +111,68 @@ ao_ms5607_prom_read(struct ms5607_prom *prom) ao_ms5607_stop(); r++; } - crc = ao_ms5607_crc((uint8_t *) prom); - if (crc != (((uint8_t *) prom)[15] & 0xf)) - printf ("MS5607 PROM CRC error (computed %x actual %x)\n", crc, (((uint8_t *) prom)[15] & 0xf)); + + if (!ao_ms5607_prom_valid((uint8_t *) prom)) + ao_panic(AO_PANIC_SELF_TEST_MS5607); #if __BYTE_ORDER == __LITTLE_ENDIAN /* Byte swap */ r = (uint16_t *) prom; for (addr = 0; addr < 8; addr++) { - uint16_t t = *r; - *r++ = (t << 8) | (t >> 8); + uint8_t *t = (uint8_t *) r; + uint8_t a = t[0]; + t[0] = t[1]; + t[1] = a; + r++; } #endif } -static void +void ao_ms5607_setup(void) { if (ms5607_configured) return; ms5607_configured = 1; ao_ms5607_reset(); - ao_ms5607_prom_read(&ms5607_prom); + ao_ms5607_prom_read(&ao_ms5607_prom); +} + +static volatile uint8_t ao_ms5607_done; + +static void +ao_ms5607_isr(void) +{ + ao_exti_disable(AO_MS5607_MISO_PORT, AO_MS5607_MISO_PIN); + ao_ms5607_done = 1; + ao_wakeup((void *) &ao_ms5607_done); } static uint32_t -ao_ms5607_convert(uint8_t cmd) { +ao_ms5607_get_sample(uint8_t cmd) { uint8_t reply[3]; uint8_t read; + ao_ms5607_done = 0; + ao_ms5607_start(); ao_spi_send(&cmd, 1, AO_MS5607_SPI_INDEX); - ao_ms5607_stop(); - ao_delay(AO_MS_TO_TICKS(20)); + ao_exti_enable(AO_MS5607_MISO_PORT, AO_MS5607_MISO_PIN); + +#if AO_MS5607_PRIVATE_PINS + ao_spi_put(AO_MS5607_SPI_INDEX); +#endif + ao_arch_block_interrupts(); + while (!ao_gpio_get(AO_MS5607_MISO_PORT, AO_MS5607_MISO_PIN) && + !ao_ms5607_done) + ao_sleep((void *) &ao_ms5607_done); + ao_arch_release_interrupts(); +#if AO_MS5607_PRIVATE_PINS + stm_gpio_set(AO_MS5607_CS_PORT, AO_MS5607_CS_PIN, 1); +#else + ao_ms5607_stop(); +#endif ao_ms5607_start(); read = AO_MS5607_ADC_READ; @@ -128,72 +183,117 @@ ao_ms5607_convert(uint8_t cmd) { return ((uint32_t) reply[0] << 16) | ((uint32_t) reply[1] << 8) | (uint32_t) reply[2]; } +#ifndef AO_MS5607_BARO_OVERSAMPLE +#define AO_MS5607_BARO_OVERSAMPLE 2048 +#endif + +#ifndef AO_MS5607_TEMP_OVERSAMPLE +#define AO_MS5607_TEMP_OVERSAMPLE AO_MS5607_BARO_OVERSAMPLE +#endif + +#define token_paster(x,y) x ## y +#define token_evaluator(x,y) token_paster(x,y) + +#define AO_CONVERT_D1 token_evaluator(AO_MS5607_CONVERT_D1_, AO_MS5607_BARO_OVERSAMPLE) +#define AO_CONVERT_D2 token_evaluator(AO_MS5607_CONVERT_D2_, AO_MS5607_TEMP_OVERSAMPLE) + void ao_ms5607_sample(struct ao_ms5607_sample *sample) { - uint8_t addr; - uint32_t D1, D2; - int32_t dT; - int32_t TEMP; - int64_t OFF; - int64_t SENS; - int32_t P; + sample->pres = ao_ms5607_get_sample(AO_CONVERT_D1); + sample->temp = ao_ms5607_get_sample(AO_CONVERT_D2); +} - ao_ms5607_setup(); +#ifdef _CC1111_H_ +#include "ao_ms5607_convert_8051.c" +#else +#include "ao_ms5607_convert.c" +#endif - D2 = ao_ms5607_convert(AO_MS5607_CONVERT_D2_4096); - printf ("Conversion D2: %d\n", D2); - D1 = ao_ms5607_convert(AO_MS5607_CONVERT_D1_4096); - printf ("Conversion D1: %d\n", D1); - - dT = D2 - ((int32_t) ms5607_prom.tref << 8); - - TEMP = 2000 + (((int64_t) dT * ms5607_prom.tempsens) >> 23); - - OFF = ((int64_t) ms5607_prom.off << 17) + (((int64_t) ms5607_prom.tco * dT) >> 6); - - SENS = ((int64_t) ms5607_prom.sens << 16) + (((int64_t) ms5607_prom.tcs * dT) >> 7); - - if (TEMP < 2000) { - int32_t T2 = ((int64_t) dT * (int64_t) dT) >> 31; - int32_t TEMPM = TEMP - 2000; - int64_t OFF2 = (61 * (int64_t) TEMPM * (int64_t) TEMPM) >> 4; - int64_t SENS2 = 2 * (int64_t) TEMPM * (int64_t) TEMPM; - if (TEMP < 1500) { - int32_t TEMPP = TEMP + 1500; - int64_t TEMPP2 = TEMPP * TEMPP; - OFF2 = OFF2 + 15 * TEMPP2; - SENS2 = SENS2 + 8 * TEMPP2; - } - TEMP -= T2; - OFF -= OFF2; - SENS -= SENS2; +#ifndef HAS_MS5607_TASK +#define HAS_MS5607_TASK HAS_TASK +#endif + +struct ao_ms5607_sample ao_ms5607_current; + +#if HAS_MS5607_TASK +static void +ao_ms5607(void) +{ + struct ao_ms5607_sample sample; + ao_ms5607_setup(); + for (;;) + { + ao_ms5607_sample(&sample); + ao_arch_block_interrupts(); + ao_ms5607_current = sample; + AO_DATA_PRESENT(AO_DATA_MS5607); + AO_DATA_WAIT(); + ao_arch_release_interrupts(); } +} + +struct ao_task ao_ms5607_task; +#endif - P = ((((int64_t) D1 * SENS) >> 21) - OFF) >> 15; - sample->temp = TEMP; - sample->pres = P; +#if HAS_TASK +void +ao_ms5607_info(void) +{ + printf ("ms5607 reserved: %u\n", ao_ms5607_prom.reserved); + printf ("ms5607 sens: %u\n", ao_ms5607_prom.sens); + printf ("ms5607 off: %u\n", ao_ms5607_prom.off); + printf ("ms5607 tcs: %u\n", ao_ms5607_prom.tcs); + printf ("ms5607 tco: %u\n", ao_ms5607_prom.tco); + printf ("ms5607 tref: %u\n", ao_ms5607_prom.tref); + printf ("ms5607 tempsens: %u\n", ao_ms5607_prom.tempsens); + printf ("ms5607 crc: %u\n", ao_ms5607_prom.crc); } static void ao_ms5607_dump(void) { - struct ao_ms5607_sample sample; + struct ao_ms5607_value value; - ao_ms5607_sample(&sample); - printf ("Temperature: %d\n", sample.temp); - printf ("Pressure %d\n", sample.pres); +#if !HAS_MS5607_TASK + ao_ms5607_setup(); + ao_ms5607_info(); + ao_ms5607_sample(&ao_ms5607_current); +#endif + ao_ms5607_convert(&ao_ms5607_current, &value); + printf ("Pressure: %8lu %8ld\n", ao_ms5607_current.pres, value.pres); + printf ("Temperature: %8lu %8ld\n", ao_ms5607_current.temp, value.temp); + printf ("Altitude: %ld\n", ao_pa_to_altitude(value.pres)); } -__code struct ao_cmds ao_ms5607_cmds[] = { - { ao_ms5607_dump, "p\0Display MS5607 data" }, +const struct ao_cmds ao_ms5607_cmds[] = { + { ao_ms5607_dump, "B\0Display MS5607 data" }, { 0, NULL }, }; +#endif /* HAS_TASK */ void ao_ms5607_init(void) { ms5607_configured = 0; + ao_spi_init_cs(AO_MS5607_CS_PORT, (1 << AO_MS5607_CS_PIN)); + +#if HAS_TASK ao_cmd_register(&ao_ms5607_cmds[0]); - ao_spi_init_cs(AO_MS5607_CS_GPIO, (1 << AO_MS5607_CS)); +#endif +#if HAS_MS5607_TASK + ao_add_task(&ao_ms5607_task, ao_ms5607, "ms5607"); +#endif + + /* Configure the MISO pin as an interrupt; when the + * conversion is complete, the MS5607 will raise this + * pin as a signal + */ + ao_exti_setup(AO_MS5607_MISO_PORT, + AO_MS5607_MISO_PIN, + AO_EXTI_MODE_RISING| + AO_EXTI_PIN_NOCONFIGURE, + ao_ms5607_isr); } + +#endif