no chipselect */#define SPI_READY 0x80/* slave pulls low to pause */#define SPI_TX_DUAL 0x100/* transmit with 2 wires */#define SPI_TX_QUAD 0x200/* transmit with 4 wires */#define SPI_RX_DUAL 0x400/* receive wit
{"ready",0,0,'R'}, {"dual",0,0,'2'}, {"verbose",0,0,'v'}, {"quad",0,0,'4'}, {NULL,0,0,0}, }; intc; c = getopt_long(argc, argv,"D:s:d:b:lHOLC3NR24p:v", lopts,NULL); if(c ==-1) break; switch(c) { case'D': device = optarg; break; case's': s...
no chipselect */#defineSPI_READY 0x80/* slave pulls low to pause */u8 bits_per_word;intirq;void*controller_state;//控制器运行状态void*controller_data;//特定板子为控制器定义的数据char
MasterKeepIOState)); } hspi->ErrorCode = HAL_SPI_ERROR_NONE; hspi->State = HAL_SPI_STATE_READY; return HAL_OK; } 函数描述: 此函数用于初始化SPI。 函数参数: 第1个参数是SPI_HandleTypeDef类型结构体指针变量,用于配置要初始化的参数。 返回值,返回HAL_TIMEOUT表示超时,HAL_ERROR表示参数错误,HAL...
我们要用GPIO来实现SOC向OLED写数据,这一层用gpio_spi.c来实现,负责发送数据。 对于OLED,有专门的指令和数据格式,要传输的数据内容,在oled.c这一层来实现,负责组织数据。 因此,我们需要实现以上两个文件。 需要实现的函数:先SPI初始化SPIInt(),再初始化OLEDOLEDInit(),最后再显示OLEDPrint()。
#define RT_SPI_MODE_MASK (RT_SPI_CPHA | RT_SPI_CPOL | RT_SPI_MSB | RT_SPI_SLAVE | RT_SPI_CS_HIGH | RT_SPI_NO_CS | RT_SPI_3WIRE | RT_SPI_READY) /* 设置时钟极性和时钟相位 */ #define RT_SPI_MODE_0 (0 | 0) /* CPOL = 0, CPHA = 0 */ ...
(RT_SPI_CPOL | RT_SPI_CPHA) /* CPOL = 1, CPHA = 1 */ #define RT_SPI_CS_HIGH (1<<4) /* Chipselect active high */ #define RT_SPI_NO_CS (1<<5) /* No chipselect */ #define RT_SPI_3WIRE (1<<6) /* SI/SO pin shared */ #define RT_SPI_READY (1<<7) /* Slave ...
/* LED0闪烁 */}lcd_show_string(30, 130, 200, 16, 16, "SPI FLASH Ready!", BLUE);flashs...
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#define RT_SPI_READY (1<<7) /* Slave pulls low to pause */ 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 数据宽度/data_width:根据SPI主设备及SPI从设备可发送及接收的数据宽度格式设置为8位、16位或者32位。