Function usbReadCallback

src/massStorage.cpp:315–326

}

int32_t usbReadCallback(uint32_t lba, uint32_t offset, void *buffer, uint32_t bufsize) {
    const uint32_t secSize = SDM.sectorSize();
    if (secSize == 0 || offset != 0 || (bufsize % secSize) != 0) return -1;

    const uint32_t blocks = bufsize / secSize;
    for (uint32_t x = 0; x < blocks; ++x) {
        if (!SDM.readRAW(reinterpret_cast<uint8_t *>(buffer) + (x * secSize), lba + x)) {
            return -1; // read error
        }
    }
    return bufsize;
}

bool usbStartStopCallback(uint8_t power_condition, bool start, bool load_eject) {
    (void)power_condition;