rt_uint8_t mode;conststructrt_spi_ops *ops;structrt_mutexlock;structrt_spi_device *owner; }; 在使用 SPI 操作具体设备之前,需要 rt_hw_spi_device_attach 对对应设备的SPI时序配置进行绑定,官方的说法是将设备挂载到SPI总线; 下面我们一步步来看 SPI 设备时怎么样初始化和注册设备的; 其中SPI 总线bus...
spi_rw_bytes(device, (rt_uint8_t *)message->send_buf, (rt_uint8_t *)message->recv_buf, message->length); if (message->cs_release){ ops->set_cs(ops->data, PIN_HIGH); } } static const struct rt_spi_ops spi_bit_bus_ops ={ RT_NULL, spi_bit_xfer }; 1. 2. 3. 4. 5....
spi_rw_bytes(device, (rt_uint8_t *)message->send_buf, (rt_uint8_t *)message->recv_buf, message->length); if (message->cs_release){ ops->set_cs(ops->data, PIN_HIGH); } } static const struct rt_spi_ops spi_bit_bus_ops ={ RT_NULL, spi_bit_xfer }; 优化思路: 1. 由于ab...
RT-Thread BSP Static Build Check (Env 1.5.x) [components][SPI][spi-bit-ops]修复可能的异常操作 #736 Sign in to view logs Summary Jobs RT-Thread Online Packages (STM32F407 RT-Spark) RTduino/Arduino Libraries (STM32F412 Nucleo) RTduino/Arduino Libraries (Raspberry Pico) ...
static rt_uint32_t spi_bit_xfer(struct rt_spi_device *device, struct rt_spi_message *message) { struct rt_spi_bit_ops *ops = (struct rt_spi_bit_ops *)device->user_data; rt_uint8_t tmp_buf[1024]; rt_memset(tmp_buf, 0, sizeof(tmp_buf)); ...
static const struct rt_spi_ops spi_bit_bus_ops ={ RT_NULL, spi_bit_xfer }; 优化思路: 1. 由于ab32vg1没有外部中断可以使用,ov7670的帧同步信号vsync只有500us的高电平时间,因此为了捕捉到该信号,vsync线程一直占用很多的资源; 2. 串口与上位通讯的速度目前最快只有115200bps,上位机可以接受256000bps...
static const struct rt_spi_ops spi_bit_bus_ops ={ RT_NULL, spi_bit_xfer }; 优化思路: 1. 由于ab32vg1没有外部中断可以使用,ov7670的帧同步信号vsync只有500us的高电平时间,因此为了捕捉到该信号,vsync线程一直占用很多的资源; 2. 串口与上位通讯的速度目前最快只有115200bps,上位机可以接受256000bps...
staticrt_uint32_tspi_bit_xfer(structrt_spi_device*device,structrt_spi_message*message) { structrt_spi_bit_ops*ops = (structrt_spi_bit_ops*)device->user_data; rt_uint8_ttmp_buf[1024]; rt_memset(tmp_buf, 0,sizeof(tmp_buf)); ...
RT_ASSERT(configuration != RT_NULL);structstm32_spi*spi_drv=rt_container_of(device->bus,structstm32_spi, spi_bus); spi_drv->cfg = configuration;returnstm32_spi_init(spi_drv, configuration); }staticconststructrt_spi_opsstm_spi_ops={ ...
/* LCD底层驱动代码,因为引脚不够,所以无法演示,测试可用,另外程序里也配有寄存器版本的操作代码 */staticrt_uint32_tspi_bit_xfer(struct rt_spi_device*device,struct rt_spi_message*message){struct rt_spi_bit_ops*ops=(struct rt_spi_bit_ops*)device->user_data;rt_uint8_t tmp_buf[1024];rt_...