Mikroelektronika MIKROE-724 データシート

622

mikoBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

UARTx_Init

sub procedure UARTx_Init(dim baud_rate as longint)

Description Configures and initializes the UART module.

The internal UART module module is set to: 

- continue operation in IDLE mode 

- default Tx and Rx pins 

- loopback mode disabled 

- 8-bit data, no parity 

- 1 STOP bit 

- transmitter enabled 

- generate interrupt on transmission end 

- interrupt on reception enabled 

- Address Detect mode disabled 

Parameters - 

baud_rate

: requested baud rate 

Nothing.

Routine requires the UART module.

UART1_Init(2400)

Refer to the device data sheet for baud rates allowed for specific Fosc.

For the dsPIC33 and PIC24 MCUs, the compiler will choose for which speed the calculation is to be 

performed (high or low). This does not mean that it is the best choice for desired baud rate. 

If the baud rate error generated in this way is too big then UARTx_Init_Advanced routine, which allows 

speed select be used.

UART library routines require you to specify the module you want to use. To select the desired UART 

module, simply change the letter 

x in the routine prototype for a number from 1 to 4.

Switching between the UART modules in the UART library is done by the UART_Set_Active function 

(UART modules have to be previously initialized).

Number of UART modules per MCU differs from chip to chip. Please, read the appropriate datasheet 

before utilizing this library.