51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
#include <detpic32.h>
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int main() {
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TRISCbits.TRISC14 = 0;
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U2BRG = ((PBCLK + 8 * 115200) / (16 * 115200)) - 1;
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U2MODEbits.BRGH = 0; // 16x baud clock enabled (1 -> 4x baud clock)
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U2MODEbits.PDSEL = 00; // 8 data bits, without parity
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U2MODEbits.STSEL = 0; // 1 stop bit
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U2STAbits.URXEN = 1; // Enable Receiver
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U2STAbits.UTXEN = 1; // Enable Transmitter
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IEC1bits.U2RXIE = 1;
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IEC1bits.U2TXIE = 0;
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IPC8bits.U2IP = 2;
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IFS1bits.U2RXIF = 0;
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U2MODEbits.ON = 1;
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EnableInterrupts();
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while (1);
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return 0;
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}
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void putc(char byte) {
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// wait while UTXBF == 1
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while (U2STAbits.UTXBF == 1);
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// Copy byte to the UxTXREG register
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U2TXREG = byte;
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}
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void _int_(32) isr_uart2rx() {
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// If OERR == 1 then reset OERR
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if (U2STAbits.OERR == 1)
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U2STAbits.OERR = 0;
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// Wait while URXDA == 0
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while (U2STAbits.URXDA == 0);
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// Save U2RXREG value
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char c = U2RXREG;
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if (c == 'T') LATCbits.LATC14 = 1;
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else if (c == 't') LATCbits.LATC14 = 0;
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putc(c);
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IFS1bits.U2RXIF = 0;
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}
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