STM32F103 project of LPS33HW

littleshrimp

STM32F103 project of LPS33HW [Copy link]

 

 

For the project written by @CCss131, stm32f103 reads lps33hw data and prints it through the serial port

Created with STM32CubeMX, based on NUCLEO-F103RB

I don't have this board, @CCss131 you try it, if you have any questions, please reply and I will fix it for you

stm32f103 lps33hw.rar (8.13 MB, downloads: 83)

2019-9-3 17:16 上传

点击文件名下载附件

CCss131

Okay, thank you.

CCss131

How to change to standard library to drive

littleshrimp

CCss131 posted on 2019-9-3 18:06 How can I change to the standard library to drive?

Is there a standard library for stm32f103?

CCss131

littleshrimp posted on 2019-9-3 19:17 Is it a standard library for stm32f103?

Yes, yes, I haven't used the STM32CubeMX software yet. The board I use is STM32's C8T6. Can I modify it like this? https://bbs.eeworld.com.cn/thread-1064955-1-1.html

littleshrimp

CCss131 posted on 2019-9-4 08:41 Yes, I haven't used the STM32CubeMX software yet. The board I use is the STM32 C8T6. Can I modify it like this? http://bbs.eeworld.c ...

It is not much different from the code in this website. Just turn on i2c and uart in your project, and then put the files in the lps33hw_STdC folder into the project.

Replace the corresponding functions in tx_com, platform_read, and platform_write in the read_data_simple.c file with the corresponding uart and i2c transceiver functions.

CCss131

Hello, moderator, I use SPI communication, MISO has no return value, corresponding in platform_write

u8 SPIx_Send_Byte(SPI_TypeDef* SPIx, u8 dat)
{
u8 retry = 0;
while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_TXE) == RESET)
{
retry++;
if(retry > 200)
return 0;
}
SPI_I2S_SendData(SPIx, data);
retry = 0;
while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET)
{
retry++;
if(retry > 200)
return 0;
}
return SPI_I2S_ReceiveData(SPIx);

It is dead loop inside, what should be the problem?

littleshrimp

CCss131 posted on 2019-9-5 15:05 Hello, moderator, I use SPI communication, MISO has no return value, in platform_write corresponds to u8 SPIx_Send_Byte(SPI_TypeDef* SPIx ...

Use an oscilloscope to check if the timing of CS, SCLK, and MOSI is normal.

If you read who am i normally, see if there is any data returned

CCss131

The waveform is like this, how should I read the address of WHO AM I?

littleshrimp

CCss131 posted on 2019-9-5 15:58 The waveform is like this, how should I read the address of WHO AM I?

According to your timing, it should be writing the CTRL_REG2 register.

Read who am i executes the platform_read function, the register address is 0x0f

CCss131

It cannot be read. It does not read 10110001 in WHO AN I. Is it because I configured the function incorrectly?

littleshrimp

CCss131 posted on 2019-9-5 18:26 It cannot be read. It does not read 10110001 in WHO AN I. Is it because the function I configured is incorrect?

Take a look at the waveform of reading who am i

CCss131

I use the platform_read function directly in while(1) to read. Is it easier to use simulated I2C?

littleshrimp

CCss131 posted on 2019-9-6 09:37 I use the platform_read function directly in while (1) to read. Is it easier to use simulated I2C?

They are almost the same, i2c is more convenient, 2 wires

Looking at your timings, are the mosi and miso marked incorrectly?

No control CS signal

The data sent does not look like 0x0f

CCss131

I wonder if the moderator has a similar example using the STM32F103 driver?

littleshrimp

CCss131 posted on 2019-9-6 16:25 I don't know, does the moderator have a similar routine using the STM32F103 driver?

Please send the test project and hardware connection and I will show it to you.

CCss131

Moderator, please help me take a look

littleshrimp

CCss131 posted on 2019-9-6 19:14 Moderator, please help me take a look

"

SPI: used PB4-PB7 pins, now use IIC connection: PB6 and PB7

I would like to ask how to change P1619 tx_com in lps_reg.c so that I can print data on the serial port

How to write a mnemonic function to read and print data continuously? https://wenku.baidu.com/view/8412fbc0dd88d0d232d46a48.html F103C8T6 pin I really hope to get your guidance, thank you!

"

This is the project I sent you at first. The original I2C connection was PB89 and PB9, but now it has been changed to PB6 and PB7.

Try this project again. If you want to print via UART, PA2 is the TX of the microcontroller, and PA3 is the RX of the microcontroller. Just connect these two wires to the corresponding serial port.

stm32f103 lps33hw.rar (8.13 MB, downloads: 18)

2019-9-7 09:22 上传

点击文件名下载附件

zhuyebb

How to change to standard library to drive

CCss131

Hello, moderator, what is the use of the INT_DRDY pin? How to configure it? Is it used for ADC sampling? Also, I am using the hardware SPI to drive LPS33HW, and the program is stuck here. How should I solve it?

whoamI = 0;
lps33hw_device_id_get(&dev_ctx, &whoamI);

if (whoamI != LPS33HW_ID )
while(1)