simple UART Transmit and Receive on LPC1778
Posted by John Gaffey
on August 13, 2013
I am trying to do a very simple transmit and receive a char on UART0 I have this for transmit:
LPC_UART_TypeDef *UARTx = (LPC_UART_TypeDef *) LPC_UART0;
UART_CFG_Type UARTConfigStruct; /* UART Configuration structure variable */
UART_FIFO_CFG_Type UARTFIFOConfigStruct; /* UART FIFO configuration Struct variable */
/* Initialize UART Configuration parameter structure to default state:
* Baudrate = 9600bps, 8 data bit, 1 Stop bit, None parity */
/* Set Baudrate to 115200 */
//UARTConfigStruct.Baud_rate = 115200;
/* Initialize UART0 peripheral with given to corresponding parameter */
/* Initialize FIFOConfigStruct to default state:
* - FIFO_DMAMode = DISABLE
* - FIFO_Level = UART_FIFO_TRGLEV0
* - FIFO_ResetRxBuf = ENABLE
* - FIFO_ResetTxBuf = ENABLE
* - FIFO_State = ENABLE
/* Initialize FIFO for UART0 peripheral */
/* Enable UART Transmit */
Followed by a:
UART_Send(UARTx, (uint8_t *)string, strlen(string), BLOCKING);
It seems to try and transmit:
the first character and then times out.
Is this the right path?
Also do you have a example receive?
I could not find serial example for 1778.
RE: simple UART Transmit and Receive on LPC1778
Posted by Richard
on August 14, 2013
As we support hundreds of chips, with a massive range of peripheral IP, we are unfortunately unable to provide support on chip specific configuration (unless it is directly related to a FreeRTOS port).
If the IP is the same as that used on the 1768 (which I think it is) then you will find a lot of serial port related code in the the FreeRTOS+IO product - which is a free download
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