Question
How to write multiple sensor modules with stm32 spi
I don't know how to use several sensor modules with stm32 spi
They told me to use the code I received, but I think it's wrong because even if I connect the sensor and run the code, the same value comes out
Do I have to fix all the codes below? Or do I just have to change it a little bit?
Please tell me how I can use multiple sensor modules with one spi
// spi -speed = 2 "=" 64.5MBits => 0x00
// spi -speed = 4 "=" 32.25MBits => 0xFF
// spi -speed = 8 "=" 16.125MBits =>
// spi -speed = 16 "=" 8.0825MBits => 0xFF
// spi -speed = 256 "=" 503.906MBits =>
uint8_t T_buffer1[] = {0xC0, 0x00 };
uint8_t T_buffer2[] = {0x05, 0x00 };
uint8_t T_buffer3[] = {0x07, 0x03 };
uint8_t T_buffer4[] = {0x0B, 0x00};
uint8_t T_buffer6[] = {0x0D, 0x00};
uint8_t T_buffer7[] = {0x0F, 0x00};
uint8_t T_buffer8[] = {0x11, 0x00};
uint8_t T_buffer9[] = {0x13, 0x00};
uint8_t T_buffer10[] = {0x15, 0x00};
uint8_t T_buffer11[] = {0x17, 0x00};
uint8_t T_buffer12[] = {0x19, 0x00};
uint8_t T_buffer13[] = {0x00};
uint8_t T_buffer_Cmd[] = {0xA0, 0x00,0xFF,0xFF};
uint8_t T_buffer_Capture0[] = {0x00, 0x00,0xFF,0xFF,128};
uint8_t T_buffer_Capture1[] = {0x00, 0x00,0xFF,0xFF,128};
uint8_t T_buffer_Capture2[] = {0x00, 0x00,0xFF,0xFF,128};
uint8_t T_buffer_Capture3[] = {0x00, 0x00,0xFF,0xFF,128};
uint8_t T_buffer_Capture4[] = {0x00, 0x00,0xFF,0xFF,128};
uint8_t T_buffer_Capture5[] = {0x00, 0x00,0xFF,0xFF,128};
uint8_t T_buffer_Capture6[] = {0x00, 0x00,0xFF,0xFF,128};
uint8_t T_buffer_Capture7[] = {0x00, 0x00,0xFF,0xFF,128};
// --> ch0
// uint8_t T_buffer_C1[] = {0x03,0x01};
// uint8_t T_buffer_C2[] = {0x05,0xFE};
// uint8_t T_buffer_C3[] = {0x0B,0x06}; //0B : 0,0D : 1
// --> ch1
// uint8_t T_buffer_C1[] = {0x03,0x02};
// uint8_t T_buffer_C2[] = {0x05,0xFD};
// uint8_t T_buffer_C3[] = {0x0D,0x06}; //0B : 0,0D : 1
uint8_t T_buffer_C1[] = {0x03,0x01,0x00}; // 80: 7
uint8_t T_buffer_C2[] = {0x05,0xFE,0x00}; //7F: 7
uint8_t T_buffer_C3[] = {0x0B,0x06,0x00}; //0B : 0,0D : 1 19: 7
uint8_t T_buffer_C33[] = {0xA0,0x00,0x00,0x00};
uint8_t T_buffer_C4_3[] = {0x00,0x00,0x00,0x00};
uint8_t T_buffer_C5[] = {0xFF,0xFF,0x00,0x00};
uint8_t T_buffer_C1_[] = {0x85,0x00}; // 80: 7
uint8_t T_buffer_C2_0[] = {0x0B,0x00}; //7F: 7
uint8_t T_buffer_C2_1[] = {0x0D,0x05}; //7F: 7
uint8_t T_buffer_C2_2[] = {0x0F,0x05}; //7F: 7
uint8_t T_buffer_C2_3[] = {0x11,0x05}; //7F: 7
uint8_t T_buffer_C2_4[] = {0x13,0x05}; //7F: 7
uint8_t T_buffer_C2_51[] = {0x15,0x05}; //7F: 7
uint8_t T_buffer_C2_6[] = {0x17,0x05}; //7F: 7
uint8_t T_buffer_C2_7[] = {0x19,0x0F}; //7F: 7
uint8_t T_buffer_C33_[] = {0xA0,0x00,0xFF,0xFF};
uint8_t T_buffer_C4_[] = {0xFF,0xFF,0xFF,0xFF};
uint8_t T_buffer_C5_[] = {0x00,0x00,0x00,0x00};
uint8_t T_buffer_C1_5[] = {0x03,0x80};
uint8_t T_buffer_C2_5[] = {0x05,0x7F};
uint8_t T_buffer_C3_5[] = {0x19,0x06}; //0B : 0,0D : 1
uint8_t T_buffer_C33_5[] = {0xA0,0x00};
uint8_t T_buffer_C4_5[] = {0xFF,0xFF};
uint8_t T_buffer_C5_5[] = {0xC0,0x00,0xFF,0xFF};
HAL_SPI_Transmit(&hspi2, T_buffer_C1_, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi2, T_buffer_C2_0, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5); /*
HAL_SPI_Transmit(&hspi2, T_buffer_C2_1, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi2, T_buffer_C2_2, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi2, T_buffer_C2_3, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi2, T_buffer_C2_4, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi2, T_buffer_C2_51, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi2, T_buffer_C2_6, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5); */
HAL_SPI_Transmit(&hspi2, T_buffer_C2_7, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi2, T_buffer_C5_5, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi2, T_buffer_C5_5+2, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi5, T_buffer_C1_, 2, 5);
HAL_SPI_Receive(&hspi5,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi5, T_buffer_C2_0, 2, 5);
HAL_SPI_Receive(&hspi5,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi5, T_buffer_C2_7, 2, 5);
HAL_SPI_Receive(&hspi5,R_buffer_Spi5, 2, 5);
HAL_SPI_Transmit(&hspi5, T_buffer_C5_5, 2, 5);
HAL_SPI_Receive(&hspi5,R_buffer_Spi5, 2, 5);
HAL_SPI_Transmit(&hspi5, T_buffer_C5_5+2, 2, 5);
HAL_SPI_Receive(&hspi5,R_buffer_Spi5, 2, 5);
for(;;)
{
osDelay(1);
if(timer_state==1)
{
for(int i=0; i<8; i++)
{
T_buffer_C5_5[0] = 0xC0 + (4 * i);
HAL_Delay(1);
HAL_SPI_Transmit(&hspi2, T_buffer_C5_, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
HAL_SPI_Transmit(&hspi2, T_buffer_C4_, 2, 5);
HAL_SPI_Receive(&hspi2,R_buffer_Spi2, 2, 5);
Temp_Ch0 = R_buffer_Spi2[3];
Temp_Ch0 = Temp_Ch0 << 8;
Temp_Ch0 += R_buffer_Spi2[2];
R_buffer_Spi2_Temp[0] = R_buffer_Spi2[3];
R_buffer_Spi2_Temp[1] = R_buffer_Spi2[2];
R_buffer_Spi2_Temp[2] = 0x0D;
R_buffer_Spi2_Temp[3] = 0x0A;
HAL_Delay(5);
if(i==0)
{
Temp_Ch0 = 0;
Temp_Ch0 = R_buffer_Spi2_Temp[1];
Temp_Ch0 = Temp_Ch0 << 8;
Temp_Ch0 += R_buffer_Spi2_Temp[0];
set_sensordata(&Temp_Ch0, 0);
}
else if(i==7)
{
Co2_2_Ch7 = 0;
Co2_2_Ch7 = R_buffer_Spi2_Temp[1];
Co2_2_Ch7 = Co2_2_Ch7 << 8;
Co2_2_Ch7 += R_buffer_Spi2_Temp[0];
set_sensordata(&Co2_2_Ch7 , 8);
}
}
T_buffer_C5_5[0]=0xC0;
memset(R_buffer_Spi5, 0x00, sizeof(R_buffer_Spi5));
memset(R_buffer_Spi2_Temp, 0x00, sizeof(R_buffer_Spi2_Temp));
timer_state= 0;
}
}