X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fdrivers%2Fao_mma655x.c;h=3fd8e064602bc092f00319c2a3878c3b65f0fc80;hb=d0160ed97b432d59e2111d8b17580b9a83e0b03b;hp=b0217368692fb7939ce391663aa815f4aa46132b;hpb=8b2e457db8c4536440ecd7dc35d06f827fc008dc;p=fw%2Faltos

diff --git a/src/drivers/ao_mma655x.c b/src/drivers/ao_mma655x.c
index b0217368..3fd8e064 100644
--- a/src/drivers/ao_mma655x.c
+++ b/src/drivers/ao_mma655x.c
@@ -25,17 +25,19 @@
 #define DEBUG_LOW	1
 #define DEBUG_HIGH	2
 #if 1
-#define PRINTD(l, ...) do { if (DEBUG & (l)) { printf ("\r%5u %s: ", ao_tick_count, __func__); printf(__VA_ARGS__); flush(); } } while(0)
+#define PRINTD(l, ...) do { if (DEBUG & (l)) { printf ("\r%5lu %s: ", (unsigned long) ao_tick_count, __func__); printf(__VA_ARGS__); flush(); } } while(0)
 #else
 #define PRINTD(l,...) 
 #endif
 
+#define AO_MMA655X_SPI_SPEED	ao_spi_speed(8333333)	/* 120ns clock period */
+
 static void
 ao_mma655x_start(void) {
 	ao_spi_get_bit(AO_MMA655X_CS_PORT,
 		       AO_MMA655X_CS_PIN,
 		       AO_MMA655X_SPI_INDEX,
-		       AO_SPI_SPEED_FAST);
+		       AO_MMA655X_SPI_SPEED);
 }
 
 static void
@@ -87,7 +89,7 @@ ao_mma655x_reg_read(uint8_t addr)
 {
 	uint8_t	d[2];
 	ao_mma655x_start();
-	d[0] = addr | (ao_parity(addr) << 7);
+	d[0] = (uint8_t) (addr | (ao_parity(addr) << 7));
 	d[1] = 0;
 	ao_spi_send(&d, 2, AO_MMA655X_SPI_INDEX);
 	ao_mma655x_restart();
@@ -108,13 +110,11 @@ ao_mma655x_reg_write(uint8_t addr, uint8_t value)
 
 	PRINTD(DEBUG_LOW, "write %x %x\n", addr, value);
 	addr |= (1 << 6);	/* write mode */
-	d[0] = addr | (ao_parity(addr^value) << 7);
+	d[0] = (uint8_t) (addr | (ao_parity(addr^value) << 7));
 	d[1] = value;
 	ao_mma655x_start();
 	ao_spi_send(d, 2, AO_MMA655X_SPI_INDEX);
 	ao_mma655x_stop();
-
-	addr &= ~(1 << 6);
 }
 
 static uint16_t
@@ -141,8 +141,8 @@ ao_mma655x_value(void)
 	PRINTD(DEBUG_LOW, "value RECV %02x %02x\n", d[0], d[1]);
 
 	v = (uint16_t) d[1] << 2;
-	v |= d[0] >> 6;
-	v |= (uint16_t) (d[0] & 3) << 10;
+	v = (uint16_t) (v | (d[0] >> 6));
+	v = (uint16_t) (v | ((d[0] & 3) << 10));
 	return v;
 }
 
@@ -223,7 +223,7 @@ ao_mma655x_setup(void)
 
 		a = ao_mma655x_value();
 
-		st_change = a_st - a;
+		st_change = (int16_t) (a_st - a);
 
 		PRINTD(DEBUG_HIGH, "self test %d normal %d change %d\n", a_st, a, st_change);