set led data

main4.c

void set_led_data()
{
    for(int i = 0; i < 3*NLEDS; i += 3) {
        if (i == 3*nled) {
            switch(g_demo_mode) 
            {
                case 0:
                {
                    m_buffer_tx[i] = 0x88888888;
                    m_buffer_tx[i+1] = caclChannelValue(128);
                    m_buffer_tx[i+2] = 0x88888888;
                }
                break;
                case 1:
                {
                    m_buffer_tx[i] = caclChannelValue(128);;
                    m_buffer_tx[i+1] = 0x88888888;
                    m_buffer_tx[i+2] = 0x88888888;
                }
                break;
                case 2:
                {
                    m_buffer_tx[i] = 0x88888888;
                    m_buffer_tx[i+1] = 0x88888888;
                    m_buffer_tx[i+2] = caclChannelValue(128);
                }
                break;
                default:
                break;
            }
        }
        else {
            m_buffer_tx[i] = 0x88888888;
            m_buffer_tx[i+1] = 0x88888888;
            m_buffer_tx[i+2] = 0x88888888;
        }
    }

    // reset 
    for(int i = 3*NLEDS; i < I2S_BUFFER_SIZE; i++) {
        m_buffer_tx[i] = 0;
    }
}