diff options
| author | Keith Packard <keithp@keithp.com> | 2012-04-09 22:21:46 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2012-04-09 22:21:46 -0700 |
| commit | c5bbfc7244faaae41c7b581644c3c253e9b7f462 (patch) | |
| tree | 2820e0176d23051d43057a530e5cbcf7aa1bf64b /src/drivers/ao_ms5607.c | |
| parent | 51aef5d4fc29986353ad887f4a67ed2fe35f8c8e (diff) | |
altos: Reduce MS5607 reset delay, increase conversion delay
Reset doesn't take very long, while doing a conversion seems to take
more than 10ms.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/drivers/ao_ms5607.c')
| -rw-r--r-- | src/drivers/ao_ms5607.c | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/src/drivers/ao_ms5607.c b/src/drivers/ao_ms5607.c index 51922dc7..87748272 100644 --- a/src/drivers/ao_ms5607.c +++ b/src/drivers/ao_ms5607.c @@ -18,11 +18,6 @@ #include <ao.h> #include "ao_ms5607.h" -#define AO_MS5607_CS_GPIO stm_gpioc -#define AO_MS5607_CS 4 -#define AO_MS5607_CS_MASK (1 << AO_MS5607_CS) -#define AO_MS5607_SPI_INDEX (STM_SPI_INDEX(1)) - struct ms5607_prom { uint16_t reserved; uint16_t sens; @@ -55,7 +50,7 @@ ao_ms5607_reset(void) { cmd = AO_MS5607_RESET; ao_ms5607_start(); ao_spi_send(&cmd, 1, AO_MS5607_SPI_INDEX); - ao_delay(AO_MS_TO_TICKS(100)); + ao_delay(AO_MS_TO_TICKS(10)); ao_ms5607_stop(); } @@ -70,28 +65,27 @@ ao_ms5607_prom_read(uint8_t addr) ao_spi_send(&cmd, 1, AO_MS5607_SPI_INDEX); ao_spi_recv(d, 2, AO_MS5607_SPI_INDEX); ao_ms5607_stop(); - v = ((uint16_t) d[0] << 8) | (uint16_t) d[1]; -// printf ("ms5607_prom_read recv %02x %02x -> %04x\n", d[0], d[1], v); - return v; + return ((uint16_t) d[0] << 8) | (uint16_t) d[1]; } static void ao_ms5607_init_chip(void) { uint8_t addr; uint16_t *prom; + ao_ms5607_reset(); prom = &ms5607_prom.reserved; for (addr = 0; addr <= 7; addr++) prom[addr] = ao_ms5607_prom_read(addr); - printf ("reserved: %d\n", ms5607_prom.reserved); - printf ("sens: %d\n", ms5607_prom.sens); - printf ("off: %d\n", ms5607_prom.off); - printf ("tcs: %d\n", ms5607_prom.tcs); - printf ("tco: %d\n", ms5607_prom.tco); - printf ("tref: %d\n", ms5607_prom.tref); - printf ("tempsens: %d\n", ms5607_prom.tempsens); - printf ("crc: %d\n", ms5607_prom.crc); + printf ("reserved: 0x%x\n", ms5607_prom.reserved); + printf ("sens: 0x%x\n", ms5607_prom.sens); + printf ("off: 0x%x\n", ms5607_prom.off); + printf ("tcs: 0x%x\n", ms5607_prom.tcs); + printf ("tco: 0x%x\n", ms5607_prom.tco); + printf ("tref: 0x%x\n", ms5607_prom.tref); + printf ("tempsens: 0x%x\n", ms5607_prom.tempsens); + printf ("crc: 0x%x\n", ms5607_prom.crc); } static uint32_t @@ -103,7 +97,7 @@ ao_ms5607_convert(uint8_t cmd) { ao_spi_send(&cmd, 1, AO_MS5607_SPI_INDEX); ao_ms5607_stop(); - ao_delay(AO_MS_TO_TICKS(10)); + ao_delay(AO_MS_TO_TICKS(20)); ao_ms5607_start(); read = AO_MS5607_ADC_READ; |