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receive 9-bit data via UART1 using LPC1754

Stijn Paesen

Hello,

How to set up the UART1 to receive a 9-bit data (RS485) message for LPC1754?

1 start bit, 9 data bits, 1 stop bit

Is setting parity needed? I get every byte I receive an parity error?

Regards,
Stijn

I set:
UART_InitStruct->Baud_rate = 460800;
UART_InitStruct->Databits = UART_DATABIT_8;
UART_InitStruct->Parity = UART_PARITY_SP_1;
UART_InitStruct->Stopbits = UART_STOPBIT_1;

UART_FIFOInitStruct->FIFO_DMAMode = DISABLE;
UART_FIFOInitStruct->FIFO_Level = UART_FIFO_TRGLEV0;
UART_FIFOInitStruct->FIFO_ResetRxBuf = ENABLE;
UART_FIFOInitStruct->FIFO_ResetTxBuf = ENABLE;

rs485cfg.AutoDirCtrl_State = ENABLE;
rs485cfg.DirCtrlPin = UART1_RS485_DIRCTRL_DTR;
rs485cfg.DirCtrlPol_Level = SET;
rs485cfg.DelayValue = 50;
rs485cfg.NormalMultiDropMode_State = ENABLE;
rs485cfg.AutoAddrDetect_State = DISABLE;
//rs485cfg.MatchAddrValue = 0;
rs485cfg.Rx_State = ENABLE;

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