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SPI CPU specific definitions for the STM32 family. More...
Detailed Description
SPI CPU specific definitions for the STM32 family.
Definition in file cpu_spi.h.
#include <stdint.h>#include "cpu.h"#include "macros/units.h"#include "periph/cpu_dma.h"#include "periph/cpu_gpio.h"
Include dependency graph for cpu_spi.h: This graph shows which files directly or indirectly include this file:Go to the source code of this file.
Data Structures | |
| struct | spi_conf_t |
| SPI device configuration. More... | |
| #define | SPI_HWCS_MASK (0xffffff00) |
| Define a magic number that tells us to use hardware chip select. | |
| #define | SPI_HWCS(x) |
| Override the default SPI hardware chip select access macro. | |
| #define | SPI_CS_UNDEF (GPIO_UNDEF) |
| Define value for unused CS line. | |
| #define | PERIPH_SPI_NEEDS_TRANSFER_BYTE |
| Use the shared SPI functions. | |
| #define | PERIPH_SPI_NEEDS_TRANSFER_REG |
| Use transfer reg function from periph common. | |
| #define | PERIPH_SPI_NEEDS_TRANSFER_REGS |
| Use transfer regs function from periph common. | |
| #define | HAVE_SPI_CLK_T |
| Override SPI clock speed values. | |
| enum | { SPI_CLK_100KHZ = KHZ(100) , SPI_CLK_400KHZ = KHZ(400) , SPI_CLK_1MHZ = MHZ(1) , SPI_CLK_5MHZ = MHZ(5) , SPI_CLK_10MHZ = MHZ(10) } |
Macro Definition Documentation
◆ HAVE_SPI_CLK_T
◆ PERIPH_SPI_NEEDS_TRANSFER_BYTE
| #define PERIPH_SPI_NEEDS_TRANSFER_BYTE |
◆ PERIPH_SPI_NEEDS_TRANSFER_REG
| #define PERIPH_SPI_NEEDS_TRANSFER_REG |
◆ PERIPH_SPI_NEEDS_TRANSFER_REGS
| #define PERIPH_SPI_NEEDS_TRANSFER_REGS |
◆ SPI_CS_UNDEF
| #define SPI_CS_UNDEF (GPIO_UNDEF) |
◆ SPI_HWCS
| #define SPI_HWCS | ( | x | ) |
Value:
(SPI_HWCS_MASK | x)
#define SPI_HWCS_MASK
Define a magic number that tells us to use hardware chip select.
Definition periph_cpu.h:346
Override the default SPI hardware chip select access macro.
Since the CPU does only support one single hardware chip select line, we can detect the usage of non-valid lines by comparing to SPI_HWCS_VALID.
◆ SPI_HWCS_MASK
| #define SPI_HWCS_MASK (0xffffff00) |
Define a magic number that tells us to use hardware chip select.
We use a random value here, that does clearly differentiate from any possible GPIO_PIN(x) value.
