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include/nuttx/sensors/bh1750fvi.h: Eliminate a warning.

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This commit is contained in:
Gregory Nutt 2018-07-15 07:20:07 -06:00
parent 3f5a3d0962
commit cca8771c4a
2 changed files with 13 additions and 2 deletions
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11
drivers/usbhost/usbhost_max3421e.c
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@ -947,7 +947,7 @@ static inline void max3421e_modifyreg(FAR struct max3421e_usbhost_s *priv,
{
uint8_t value;
value = max3421e_getreg(priv, addr);
value = max3421e_getreg(priv, addr);
value &= ~clrbits;
value |= setbits;
max3421e_putreg(priv, addr, value);
@ -4601,7 +4601,14 @@ static inline int max3421e_hw_initialize(FAR struct max3421e_usbhost_s *priv)
/* Configure full duplex SPI, level or edge-active, rising- or falling
* edge interrupt.
*
* NOTE: Initially, the MAX3421E operations in half-duplex mode.
* NOTE: Initially, the MAX3421E operations in half-duplex mode. MISO is
* tristated and there is no status response to commands. Writes are not
* effected: The MISO pin continues to be high impedance and the master
* continues to drive MOSI.
*
* For reads, however, after the 8-bit command, the max3421e starts driving
* the MOSI pin. The master must turn off its driver to the MOSI pin to
* avoid contention.
*/
regval = priv->lower->intconfig;

4
include/nuttx/sensors/bh1750fvi.h
View File

@ -42,6 +42,9 @@
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <nuttx/irq.h>
#include <nuttx/sensors/ioctl.h>
@ -102,6 +105,7 @@ extern "C"
*
****************************************************************************/
struct i2c_master_s; /* Forward reference */
int bh1750fvi_register(FAR const char *devpath, FAR struct i2c_master_s *i2c,
uint8_t addr);