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) ...
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)); ...
spi_cs.GPIO_Pin = GPIO_PIN_12; // 这个要根据SPI设备名字 来 查找 设备 功能1: 把spi20挂到spi2上 res = rt_hw_spi_device_attach(TempModule_SPI_BUS_NAME, TempModule_DEVICE_NAME, spi_cs.GPIOx, spi_cs.GPIO_Pin); if( res == RT_EOK ) ...
rt_err_t res;structrt_spi_device *rt_spi_device; rt_pin_mode(CS_PIN, PIN_MODE_OUTPUT); spi_cs.GPIOx=GPIOB; spi_cs.GPIO_Pin=GPIO_PIN_12;//这个要根据SPI设备名字 来 查找 设备 功能1: 把spi20挂到spi2上res =rt_hw_spi_device_attach(TempModule_SPI_BUS_NAME, TempModule_DEVICE_NAME...
注册时需要传入ops参数，ops是内核中SPI device的操作，因此在驱动中定义ops如下：configure函数实现如下，...
有了SPI总线设备对象,还需要实现总线的操作方法,操作方法的函数指针定义已经在SPI总线设备框架中给出了: /** * SPI operators */structrt_spi_ops{rt_err_t(*configure)(structrt_spi_device*device,structrt_spi_configuration*configuration);rt_uint32_t(*xfer)(structrt_spi_device*device,structrt_spi_mes...
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; ...
SPI从设备的配置参数更多... structrt_spi_bus SPI总线控制块更多... structrt_spi_ops SPI总线的操作方法更多... structrt_spi_device SPI从设备更多... 宏定义 #defineRT_SPI_CPHA(1<<0) bit[0]:CPHA, 时钟极性 #defineRT_SPI_CPOL(1<<1) ...