From: Keith Packard <keithp@keithp.com>
Date: Sun, 19 Aug 2012 04:24:16 +0000 (-0700)
Subject: altos: Use split SPI bus for MS5607 sensor
X-Git-Tag: 1.1~67^2~31
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=f46d94ca5c969c88dd307d1b684d6fafa2157020

altos: Use split SPI bus for MS5607 sensor

Leave CS low while releasing the SPI bus when waiting for conversion
complete -- other SPI bus users will use another set of pins.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src/drivers/ao_ms5607.c b/src/drivers/ao_ms5607.c
index 17fe853b..1b55b7fd 100644
--- a/src/drivers/ao_ms5607.c
+++ b/src/drivers/ao_ms5607.c
@@ -134,11 +134,18 @@ ao_ms5607_get_sample(uint8_t cmd) {
 	ao_ms5607_start();
 	ao_spi_send(&cmd, 1, AO_MS5607_SPI_INDEX);
 	ao_exti_enable(AO_MS5607_MISO_GPIO, AO_MS5607_MISO);
+#if AO_MS5607_PRIVATE_PINS
+	ao_spi_put(AO_MS5607_SPI_INDEX);
+#endif
 	cli();
 	while (!ao_ms5607_done)
 		ao_sleep(&ao_ms5607_done);
 	sei();
+#if AO_MS5607_PRIVATE_PINS
+	stm_gpio_set(AO_MS5607_CS_GPIO, AO_MS5607_CS, 1);
+#else
 	ao_ms5607_stop();
+#endif
 
 	ao_ms5607_start();
 	read = AO_MS5607_ADC_READ;