pca_board_id.h File Reference

Functions
static uint32_t	getBoardRevision ()
int	hackHellenBoardId (int)

Function Documentation

getBoardRevision()

static uint32_t getBoardRevision ( )

static

Definition at line 9 of file pca_board_id.h.

                                   {
    static bool isFirstInvocation = true;
    static uint32_t variant;
 
    if (isFirstInvocation) {
        BitbangI2c m_i2c;
        const uint8_t set_out[3] = {0x06, 0xff, 0xff};
        const uint8_t read_inputs_cmd[1] = {0x00};
        uint8_t rx[2] = {0xff, 0xff};
 
        //same pins as for baro LPS25
        m_i2c.init(Gpio::B10, Gpio::B11);
 
        // configuration registers:
        // after reset all IO pins should be configured as output, so ttis step can be skipped
        m_i2c.write(PCA9555_I2C_ADDR, set_out, sizeof(set_out));
 
        // read registers 0 and 1: Input port registers
        m_i2c.writeRead(PCA9555_I2C_ADDR, read_inputs_cmd, sizeof(read_inputs_cmd), rx, sizeof(rx));
 
        variant = (rx[1] << 8) | (rx[0] << 0);
 
        efiPrintf("Board variant 0x%04x\n", (unsigned int)variant);
 
        isFirstInvocation = false;
 
        // release gpios for baso LPS25 driver
        m_i2c.deinit();
    }
 
    return variant;
}

Referenced by hackHellenBoardId().

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hackHellenBoardId()

int hackHellenBoardId

(

int

detectedId

)

Definition at line 42 of file pca_board_id.h.

                               {
    return getBoardRevision();
}

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