本帖最后由 电子烂人 于 2024-8-22 17:19 编辑
#申请原创# #申请开发板#这篇帖子试着驱动下传感器：
1.IIS3DWBIS3DWB采用系统级封装，配备了具有低噪音以及超宽且平坦频率范围的三轴数字振动传感器。该器件具有高带宽、低噪音、高稳定性和可重复灵敏度，以及在扩展温度范围（可达+105℃）内的工作能力，特别适合工业应用中的振动监控。低功耗、高性能、还有数字输出和嵌入式数字功能（如FIFO和中断），这些特点非常适合电池供电的工业无线传感器节点。 IIS3DWB具有可选的满量程加速度范围（±2/±4/±8/±16 g），并且能够测量带宽最高达6 kHz的加速度项目，输出数据率为26.7 kHz。器件中集成了3 kB的先进先出（FIFO）缓冲器，以避免任何数据丢失，并限制主机处理器的干预。（来源：意法半导体官方） 这个传感器非常适合做工业电机的监测。 2.初始化配置
由板卡的原理图得知，震动计链接在SPI3上面
并且需要配置PB2使能
SPI配置如图：
3.移植中间件
XCUBE-MEMS中间件包配置如图：
另外，要进行传输数据的话，这里使能一组USB虚拟串口：
同时也在中间件包中选择虚拟串口：
4.代码编写：
初始化生成代码之后，根目录会有几个驱动文件：
这些里面包含了传感器和USB的所有驱动，我们只需要用到部分即可；
找到IIS3DBW的GIT开源网站，里面会有polling代码供移植参考
不过这份代码有些老，并不完全适配STWINKT1B这款板卡，需要我们做一些改动：- void iis3dwb_read_data_polling()
- {
- stmdev_ctx_t dev_ctx;
- /* Initialize mems driver interface */
- dev_ctx.write_reg = platform_write;
- dev_ctx.read_reg = platform_read;
- dev_ctx.mdelay = platform_delay;
- dev_ctx.handle = &hspi3;
- /* Init test platform */
- // platform_init();
- /* Wait sensor boot time */
- platform_delay(BOOT_TIME);
- /* Check device ID */
- iis3dwb_device_id_get(&dev_ctx, &whoamI);
- if (whoamI != IIS3DWB_ID)
- while (1);
- /* Restore default configuration */
- iis3dwb_reset_set(&dev_ctx, PROPERTY_ENABLE);
- do {
- iis3dwb_reset_get(&dev_ctx, &rst);
- } while (rst);
- /* Enable Block Data Update */
- iis3dwb_block_data_update_set(&dev_ctx, PROPERTY_ENABLE);
- /* Set Output Data Rate */
- iis3dwb_xl_data_rate_set(&dev_ctx, IIS3DWB_XL_ODR_26k7Hz);
- /* Set full scale */
- iis3dwb_xl_full_scale_set(&dev_ctx, IIS3DWB_2g);
- /* Configure filtering chain(No aux interface)
- * Accelerometer low pass filter path
- */
- iis3dwb_xl_filt_path_on_out_set(&dev_ctx, IIS3DWB_LP_ODR_DIV_100);
- /* Read samples in polling mode (no int) */
- while (1) {
- uint8_t reg;
- /* Read output only if new xl value is available */
- iis3dwb_xl_flag_data_ready_get(&dev_ctx, ®);
- if (reg) {
- /* Read acceleration field data */
- memset(data_raw_acceleration, 0x00, 3 * sizeof(int16_t));
- iis3dwb_acceleration_raw_get(&dev_ctx, data_raw_acceleration);
- acceleration_mg[0] =
- iis3dwb_from_fs2g_to_mg(data_raw_acceleration[0]);
- acceleration_mg[1] =
- iis3dwb_from_fs2g_to_mg(data_raw_acceleration[1]);
- acceleration_mg[2] =
- iis3dwb_from_fs2g_to_mg(data_raw_acceleration[2]);
- //sprintf((char *)tx_buffer,"Acceleration [mg]:%4.2f\t%4.2f\t%4.2f\r\n",acceleration_mg[0], acceleration_mg[1], acceleration_mg[2]);
- tx_com(tx_buffer, strlen((char const *)tx_buffer));
- }
- iis3dwb_temp_flag_data_ready_get(&dev_ctx, ®);
- if (reg) {
- /* Read temperature data */
- memset(&data_raw_temperature, 0x00, sizeof(int16_t));
- iis3dwb_temperature_raw_get(&dev_ctx, &data_raw_temperature);
- temperature_degC = iis3dwb_from_lsb_to_celsius(data_raw_temperature);
- //sprintf((char *)tx_buffer, "Temperature [degC]:%6.2f\r\n", temperature_degC);
- tx_com(tx_buffer, strlen((char const *)tx_buffer));
- }
- }
- }
- /*
- * [url=home.php?mod=space&uid=247401]@brief[/url] Write generic device register (platform dependent)
- *
- * @param handle customizable argument. In this examples is used in
- * order to select the correct sensor bus handler.
- * @param reg register to write
- * @param bufp pointer to data to write in register reg
- * @param len number of consecutive register to write
- *
- */
- int32_t platform_write(void *handle, uint8_t reg, const uint8_t *bufp,
- uint16_t len)
- {
- HAL_GPIO_WritePin(GPIOE,GPIO_PIN_14, GPIO_PIN_RESET);
- HAL_SPI_Transmit(handle, ®, 1, 1000);
- HAL_SPI_Transmit(handle, (uint8_t*) bufp, len, 1000);
- HAL_GPIO_WritePin(GPIOE,GPIO_PIN_14,GPIO_PIN_SET);
- return 0;
- }
- /*
- * [url=home.php?mod=space&uid=247401]@brief[/url] Read generic device register (platform dependent)
- *
- * @param handle customizable argument. In this examples is used in
- * order to select the correct sensor bus handler.
- * @param reg register to read
- * @param bufp pointer to buffer that store the data read
- * @param len number of consecutive register to read
- *
- */
- int32_t platform_read(void *handle, uint8_t reg, uint8_t *bufp,
- uint16_t len)
- {
- reg |= 0x80;
- HAL_GPIO_WritePin(GPIOE,GPIO_PIN_14, GPIO_PIN_RESET);
- HAL_SPI_Transmit(handle, ®, 1, 1000);
- HAL_SPI_Receive(handle, bufp, len, 1000);
- HAL_GPIO_WritePin(GPIOE,GPIO_PIN_14, GPIO_PIN_SET);
- return 0;
- }
- /*
- * [url=home.php?mod=space&uid=247401]@brief[/url] Send buffer to console (platform dependent)
- *
- * @param tx_buffer buffer to transmit
- * @param len number of byte to send
- *
- */
- void tx_com(uint8_t *tx_buffer, uint16_t len)
- {
- CDC_Transmit_FS(tx_buffer, len);
- }
- /*
- * @brief platform specific delay (platform dependent)
- *
- * @param ms delay in ms
- *
- */
- void platform_delay(uint32_t ms)
- {
- HAL_Delay(ms);
- }
- /*
- * @brief platform specific initialization (platform dependent)
- */
- void platform_init(void)
- {
- }
（B站过审后再补充贴上）
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