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STM32 SPI: nbits should be unsigned. Valid range is 4-16 for F3 and L4. 8 or 16 for others.

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This commit is contained in:
Gregory Nutt 2016-08-13 16:01:50 -06:00
parent 1a10518dae
commit 8052dc4955
3 changed files with 4 additions and 4 deletions
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4
ChangeLog
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@ -12393,7 +12393,6 @@
(2016-07-23).
* Freedom-K64F: Add PWM support. From Jordan MacIntyre (2016-07-25).
7.18 2016-xx-xx Gregory Nutt <gnutt@nuttx.org>
* drivers/serial/pty.c, serial.c, usbdev/cdcacm.c, include/nuttx/fs/ioctl.h:
@ -12564,7 +12563,8 @@
(2016-08-12).
* arch/sim/src: Add a simulated oneshot lowerhalf driver (2016-08-12).
* arch/arm/src/stm32: STM32F3 SPI: Fix the number of bit setting for
the F3. It works differently than for other STM32 parts (2016-08-12).
the F3. That and data packing work differently on the STM32F3 than
for other STM32 parts (2016-08-12).
* arch/arm/stm32 and stm32l4: Enabling SPI DMA loses other bits in CR2
(2016-08-13).
* arch/arm/src/stm32: STM32F3 SPI: Cannot write always 16-bit value to

2
arch/arm/src/stm32/stm32_spi.c
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@ -182,7 +182,7 @@ struct stm32_spidev_s
sem_t exclsem; /* Held while chip is selected for mutual exclusion */
uint32_t frequency; /* Requested clock frequency */
uint32_t actual; /* Actual clock frequency */
int8_t nbits; /* Width of word in bits (8 or 16) */
uint8_t nbits; /* Width of word in bits (4 through 16) */
uint8_t mode; /* Mode 0,1,2,3 */
};

2
arch/arm/src/stm32l4/stm32l4_spi.c
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@ -163,7 +163,7 @@ struct stm32l4_spidev_s
sem_t exclsem; /* Held while chip is selected for mutual exclusion */
uint32_t frequency; /* Requested clock frequency */
uint32_t actual; /* Actual clock frequency */
int8_t nbits; /* Width of word in bits (8 or 16) */
uint8_t nbits; /* Width of word in bits (4 through 16) */
uint8_t mode; /* Mode 0,1,2,3 */
};