Program Listing for File mcp3204.cpp

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#include "mcp3204/mcp3204.hh"

using iplo::MCP3204;

uint8_t MCP3204::buildRequest(std::uint8_t channel, bool single, std::uint8_t* data) {
    data[0] = 0x04;  // start bit

    if (single) {
        data[0] |= 0x02;  // single read | differential
    }

    if (channel > 3) {
        data[0] |= 0x01;  // msb channel (D2)
    }

    if (channel) {
        data[1] |= (channel << 6);  // other 2 bits (D1 D0)
    }

    return 3;
}

MCP3204::MCP3204(SPI& spi) : MCP3X0X(spi) {
    _channels = 4;
    _maxValue = 4095;
}