adxl375: Disable spi duplex

See if this fixes LPC

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

diff --git a/src/drivers/ao_adxl375.c b/src/drivers/ao_adxl375.c
index b2d3178f9b7ef364e5d6ec00a5ccee2059a67e2b..f53fb59d7ad2147aa04eb2872bd779e706d7ad1a 100644 (file)
--- a/src/drivers/ao_adxl375.c
+++ b/src/drivers/ao_adxl375.c
@@ -48,16 +48,17 @@ ao_adxl375_stop(void) {
 static uint8_t
 ao_adxl375_reg_read(uint8_t addr)
 {
-       uint8_t d[2];
+       uint8_t d[1];
 
        d[0] = addr | AO_ADXL375_READ;
        ao_adxl375_start();
-       ao_spi_duplex(d, d, 2, AO_ADXL375_SPI_INDEX);
+       ao_spi_send(d, 1, AO_ADXL375_SPI_INDEX);
+       ao_spi_recv(d, 1, AO_ADXL375_SPI_INDEX);
        ao_adxl375_stop();
 
-       PRINTD(DEBUG_LOW, "read %x = %x\n", addr, d[1]);
+       PRINTD(DEBUG_LOW, "read %x = %x\n", addr, d[0]);
 
-       return d[1];
+       return d[0];
 }
 
 static void
@@ -74,11 +75,11 @@ ao_adxl375_reg_write(uint8_t addr, uint8_t value)
 
 #if DEBUG & DEBUG_LOW
        d[0] = addr | AO_ADXL375_READ;
-       d[1] = 0;
        ao_adxl375_start();
-       ao_spi_duplex(d, d, 2, AO_ADXL375_SPI_INDEX);
+       ao_spi_send(d, 1, AO_ADXL375_SPI_INDEX);
+       ao_spi_recv(d, 1, AO_ADXL375_SPI_INDEX);
        ao_adxl375_stop();
-       PRINTD(DEBUG_LOW, "readback %x %x\n", d[0], d[1]);
+       PRINTD(DEBUG_LOW, "readback %x\n", d[0]);
 #endif
 }
 
@@ -89,9 +90,9 @@ ao_adxl375_value(struct ao_adxl375_sample *value)
 
        d[0] = AO_ADXL375_DATAX0 | AO_ADXL375_READ | AO_ADXL375_MULTI_BYTE;
        ao_adxl375_start();
-       ao_spi_duplex(d, d, 7, AO_ADXL375_SPI_INDEX);
+       ao_spi_send(d, 1, AO_ADXL375_SPI_INDEX);
+       ao_spi_recv(value, 6, AO_ADXL375_SPI_INDEX);
        ao_adxl375_stop();
-       memcpy(value, &d[1], 6);
 }
 
 struct ao_adxl375_total {