LPS22HB作为传感器输出返回零

你好，
您是否有逻辑分析仪来验证您是否将数据发送到传感器并正确地恢复数据？
您是否已开始在传感器中进行测量？
你能分享你的代码吗？
大卫



以下为原文




Hello,
Do you have a logic analyzer to verify you send the data to the sensor and get the data back correctly?
Have you started the measurement in the sensor?
Could you share your code?
David

嗨大卫，
我没有逻辑分析仪来验证数据。我从en.x-cube-mems1扩展包中移植了代码。传感器在3线SPI模式下初始化。初始化和传感器测量的伪代码如下
BSP_PRESSURE_Init（PRESSURE_SENSORS_AUTO，＆amp; PRESSURE_handle）;
BSP_PRESSURE_Sensor_Enable（PRESSURE_handle）;
if（BSP_PRESSURE_IsEnabled（PRESSURE_handle，＆amp; status）== COMPONENT_OK＆amp;＆amp; status == 1）
 
 {BSP_PRESSURE_Get_Press（PRESSURE_handle，＆amp; PRESSURE_Value）;
}



以下为原文




Hi David,
I don't have a logic analyzer to verify the data. I ported the code from en.x-cube-mems1 expansion package. The sensor is initialized in the 3-wire SPI mode. The pseudo code for initialization and sensor measurement is below
BSP_PRESSURE_Init( PRESSURE_SENSORS_AUTO, &PRESSURE_handle );
BSP_PRESSURE_Sensor_Enable(PRESSURE_handle);
if(BSP_PRESSURE_IsEnabled(PRESSURE_handle, &status) == COMPONENT_OK && status == 1)

{ BSP_PRESSURE_Get_Press(PRESSURE_handle, &PRESSURE_Value);
}

我想问题是你的微控制器的SPI 3线设置不在传感器中，在范围或逻辑分析仪上调试可能很棘手且难以调试。
我建议你仔细检查你的SPI配置，或者更确切地说是在第一次使用I2C。



以下为原文




I suppose the problem is in the SPI 3-wire settings of you microcontroller not in the sensor, it can be tricky and difficult to debug witnout scope or logic analyzer.
I would recomend you to double check your SPI configuration or rather use I2C at firts.

这是我的SPI配置
SENSORTILE_SENSORS_SPI_CLK_ENABLE（）;
 
 SENSORTILE_SENSORS_SPI_GPIO_CLK_ENABLE（）;
 
 GPIO_InitStruct.Pin = SENSORTILE_SENSORS_SPI_MOSI_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 GPIO_InitStruct.Pull = GPIO_PULLUP;
 GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
 GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
 HAL_GPIO_Init（SENSORTILE_SENSORS_SPI_Port，＆amp; GPIO_InitStruct）;
 
 GPIO_InitStruct.Pin = SENSORTILE_SENSORS_SPI_SCK_Pin;
 GPIO_InitStruct.Pull = GPIO_PULLUP;
 HAL_GPIO_Init（SENSORTILE_SENSORS_SPI_Port，＆amp; GPIO_InitStruct）;
 
 SPI_Sensor_Handle.Instance = SENSORTILE_SENSORS_SPI;
 SPI_Sensor_Handle.Init.Mode = SPI_MODE_MASTER;
 SPI_Sensor_Handle.Init.Direction = SPI_DIRECTION_1LINE;
 SPI_Sensor_Handle.Init.DataSize = SPI_DATASIZE_8BIT;
 SPI_Sensor_Handle.Init.CLKPolarity = SPI_POLARITY_HIGH;
 SPI_Sensor_Handle.Init.CLKPhase = SPI_PHASE_2EDGE;
 SPI_Sensor_Handle.Init.NSS = SPI_NSS_SOFT;
 // SPI_Sensor_Handle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16; // 5 MHz
 SPI_Sensor_Handle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32; // 2.5MHz
 SPI_Sensor_Handle.Init.FirstBit = SPI_FIRSTBIT_MSB;
 SPI_Sensor_Handle.Init.TIMode = SPI_TIMODE_DISABLED;
 SPI_Sensor_Handle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
 SPI_Sensor_Handle.Init.CRCPolynomial = 7;
 SPI_Sensor_Handle.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
 SPI_Sensor_Handle.Init.NSSPMode = SPI_NSS_PULSE_DISABLED;
 HAL_SPI_Init（安培; SPI_Sensor_Handle）;
 
 SPI_1LINE_TX（安培; SPI_Sensor_Handle）;
 __HAL_SPI_ENABLE（＆amp; SPI_Sensor_Handle）;所有定义都已更改，以反映我的自定义板上的正确引脚。这是否初始化了
MCU的SPI 3线设置是否正确？



以下为原文




This is my SPI configuration
SENSORTILE_SENSORS_SPI_CLK_ENABLE();

SENSORTILE_SENSORS_SPI_GPIO_CLK_ENABLE();
  
GPIO_InitStruct.Pin = SENSORTILE_SENSORS_SPI_MOSI_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
HAL_GPIO_Init(SENSORTILE_SENSORS_SPI_Port, &GPIO_InitStruct);
  
GPIO_InitStruct.Pin = SENSORTILE_SENSORS_SPI_SCK_Pin;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(SENSORTILE_SENSORS_SPI_Port, &GPIO_InitStruct);
  
SPI_Sensor_Handle.Instance = SENSORTILE_SENSORS_SPI;
SPI_Sensor_Handle.Init.Mode = SPI_MODE_MASTER;
SPI_Sensor_Handle.Init.Direction = SPI_DIRECTION_1LINE;
SPI_Sensor_Handle.Init.DataSize = SPI_DATASIZE_8BIT;
SPI_Sensor_Handle.Init.CLKPolarity = SPI_POLARITY_HIGH;
SPI_Sensor_Handle.Init.CLKPhase = SPI_PHASE_2EDGE;
SPI_Sensor_Handle.Init.NSS = SPI_NSS_SOFT;
// SPI_Sensor_Handle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16; // 5 MHz
SPI_Sensor_Handle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32; // 2.5MHz
SPI_Sensor_Handle.Init.FirstBit = SPI_FIRSTBIT_MSB;
SPI_Sensor_Handle.Init.TIMode = SPI_TIMODE_DISABLED;
SPI_Sensor_Handle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
SPI_Sensor_Handle.Init.CRCPolynomial = 7;
SPI_Sensor_Handle.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
SPI_Sensor_Handle.Init.NSSPMode = SPI_NSS_PULSE_DISABLED;
HAL_SPI_Init(&SPI_Sensor_Handle);
  
SPI_1LINE_TX(&SPI_Sensor_Handle);
__HAL_SPI_ENABLE(&SPI_Sensor_Handle);all the defines have been changed to reflect the correct pins on my custom board. Does this initialize the
SPI 3-wire settings of the MCU correctly ?