SYS_STATUS
uint8_t hdmi_sys_status = i2c_rd8(sd, SYS_STATUS);
return i2c_rd8(sd, SYS_STATUS) & MASK_S_HDMI;
return i2c_rd8(sd, SYS_STATUS) & MASK_S_DDC5V;
return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_TMDS);
return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_SYNC);