结构体 | |
struct | aos_spi_msg_t |
宏定义 | |
#define | AOS_SPI_MCFG_MODE_MASK ((uint32_t)0x3 << 0) |
#define | AOS_SPI_MCFG_MODE_0 ((uint32_t)0x0 << 0) |
#define | AOS_SPI_MCFG_MODE_1 ((uint32_t)0x1 << 0) |
#define | AOS_SPI_MCFG_MODE_2 ((uint32_t)0x2 << 0) |
#define | AOS_SPI_MCFG_MODE_3 ((uint32_t)0x3 << 0) |
#define | AOS_SPI_MCFG_WIDTH_MASK ((uint32_t)0x3 << 2) |
#define | AOS_SPI_MCFG_WIDTH_1 ((uint32_t)0x0 << 2) |
#define | AOS_SPI_MCFG_WIDTH_2 ((uint32_t)0x1 << 2) |
#define | AOS_SPI_MCFG_WIDTH_4 ((uint32_t)0x2 << 2) |
#define | AOS_SPI_MCFG_WIDTH_8 ((uint32_t)0x3 << 2) |
#define | AOS_SPI_MCFG_MSB_FIRST ((uint32_t)0x0 << 4) |
#define | AOS_SPI_MCFG_LSB_FIRST ((uint32_t)0x1 << 4) |
#define | AOS_SPI_MSG_INIT_VAL |
#define | aos_spi_msg_init(x) do { *(x) = (aos_spi_msg_t)AOS_SPI_MSG_INIT_VAL; } while (0) |
类型定义 | |
typedef aos_dev_ref_t | aos_spi_ref_t |
函数 | |
aos_status_t | aos_spi_get (aos_spi_ref_t *ref, uint32_t id) |
Get a SPI device. 更多... | |
void | aos_spi_put (aos_spi_ref_t *ref) |
Release a SPI device. 更多... | |
aos_status_t | aos_spi_transfer (aos_spi_ref_t *ref, const aos_spi_msg_t *msgs, size_t num_msgs) |
Synchronous SPI data transfer. 更多... | |
给应用提供SPI操作的AOS API.
#define aos_spi_msg_init | ( | x | ) | do { *(x) = (aos_spi_msg_t)AOS_SPI_MSG_INIT_VAL; } while (0) |
#define AOS_SPI_MSG_INIT_VAL |
typedef aos_dev_ref_t aos_spi_ref_t |
aos_status_t aos_spi_get | ( | aos_spi_ref_t * | ref, |
uint32_t | id | ||
) |
Get a SPI device.
[out] | ref | SPI ref to operate |
[in] | id | SPI device ID |
void aos_spi_put | ( | aos_spi_ref_t * | ref | ) |
Release a SPI device.
[in] | ref | SPI ref to operate |
aos_status_t aos_spi_transfer | ( | aos_spi_ref_t * | ref, |
const aos_spi_msg_t * | msgs, | ||
size_t | num_msgs | ||
) |
Synchronous SPI data transfer.
[in] | ref | SPI ref to operate |
[in] | msgs | array of messages |
[in] | num_msgs | number of messages |