STV090x_TSTTNR1
reg = stv090x_read_reg(state, STV090x_TSTTNR1);
if (stv090x_write_reg(state, STV090x_TSTTNR1, reg) < 0)
reg = stv090x_read_reg(state, STV090x_TSTTNR1);
reg = stv090x_read_reg(state, STV090x_TSTTNR1);
if (stv090x_write_reg(state, STV090x_TSTTNR1, reg) < 0)
{ STV090x_TSTTNR1, 0x27 },
reg = stv090x_read_reg(state, STV090x_TSTTNR1);
if (stv090x_write_reg(state, STV090x_TSTTNR1, reg) < 0)