| 9,32 → 9,33 |
|---|
| // UART1 TX RC6 |
| // UART1 RX RC7 |
| |
| TRISCbits.TRISC6 = 0; // Tx pin set to output |
| TRISCbits.TRISC7 = 1; // Rx pin set to input |
| TRISCbits.TRISC6 = 0; // Tx pin set to output |
| TRISCbits.TRISC7 = 1; // Rx pin set to input |
| |
| BAUDCON1bits.BRG16 = 0; // 8-bit baud rate generator |
| SPBRG1 = 25; // Set UART speed to 115200 baud |
| TXSTA1bits.BRGH = 1; // High speed mode |
| TXSTA1bits.SYNC = 0; // Async mode |
| RCSTA1bits.SPEN = 1; // Serial port enable |
| TXSTA1bits.TX9 = 0; // 8 bit transmission |
| RCSTA1bits.RX9 = 0; // 8 bit reception |
| RCSTA1bits.CREN = 1; // Continuous receive mode |
| |
| SPBRG1 = 25; // Set UART speed to 115200 baud |
| TXSTA1bits.BRGH = 1; // High speed mode |
| TXSTA1bits.SYNC = 0; // Async mode |
| RCSTA1bits.SPEN = 1; // Serial port enable |
| TXSTA1bits.TX9 = 0; // 8 bit transmission |
| RCSTA1bits.RX9 = 0; // 8 bit reception |
| RCSTA1bits.CREN = 1; // Continuous receive mode |
| |
| #ifdef _DEBUG // In debug mode we want to have TXEN constantly enabled |
| TXSTA1bits.TXEN = 1; // TX is always enabled |
| PIE1bits.TX1IE = 0; // Disable TX interrupt |
| TXSTA1bits.TXEN = 1; // TX is always enabled |
| PIE1bits.TX1IE = 0; // Disable TX interrupt |
| #else |
| TXSTA1bits.TXEN = 0; // Enable transmission |
| PIE1bits.TX1IE = 1; // Enable TX interrupt |
| TXSTA1bits.TXEN = 0; // Enable transmission |
| PIE1bits.TX1IE = 1; // Enable TX interrupt |
| #endif |
| |
| PIE1bits.RC1IE = 1; // Enable RX interrupt |
| PIE1bits.RC1IE = 1; // Enable RX interrupt |
| |
| // Initialize the buffer that holds UART messages |
| uart_1_data.buffer_in_read_ind = 0; |
| uart_1_data.buffer_in_write_ind = 0; |
| uart_1_data.buffer_in_len = 0; |
| uart_1_data.buffer_in_len_tmp = 0; |
| } |
| |
| //void uart_2_init() { |
| 55,29 → 56,41 |
|---|
| |
| void UART1_Recv_Interrupt_Handler() { |
| unsigned char c; |
| if (PIR1bits.RC1IF) { // Check if data receive flag is set |
| if (uart_1_data.buffer_in_len == MAXUARTBUF-1) { |
| TXSTA1bits.TXEN = 0; // Kill anything currently sending |
| DBG_PRINT_UART("UART1: buffer overflow\r\n"); |
| c = RCREG1; // Read RCREG to clear it |
| if (PIR1bits.RC1IF) { // Check if data receive flag is set |
| c = RCREG1; |
| |
| // Save received data into buffer |
| uart_1_data.buffer_in[uart_1_data.buffer_in_write_ind] = c; |
| if (uart_1_data.buffer_in_write_ind == MAXUARTBUF - 1) { |
| uart_1_data.buffer_in_write_ind = 0; |
| } else { |
| // Save received data into buffer |
| uart_1_data.buffer_in[uart_1_data.buffer_in_write_ind] = RCREG1; |
| if (uart_1_data.buffer_in_write_ind == MAXUARTBUF-1) { |
| uart_1_data.buffer_in_write_ind = 0; |
| uart_1_data.buffer_in_write_ind++; |
| } |
| |
| // Store the last MAXUARTBUF values entered |
| if (uart_1_data.buffer_in_len_tmp < MAXUARTBUF) { |
| uart_1_data.buffer_in_len_tmp++; |
| } else { |
| if (uart_1_data.buffer_in_read_ind == MAXUARTBUF - 1) { |
| uart_1_data.buffer_in_read_ind = 0; |
| } else { |
| uart_1_data.buffer_in_write_ind++; |
| uart_1_data.buffer_in_read_ind++; |
| } |
| uart_1_data.buffer_in_len++; |
| } |
| |
| // Update buffer size upon receiving newline (0x0D) |
| if (c == UART1_BREAK_CHAR) { |
| uart_1_data.buffer_in_len = uart_1_data.buffer_in_len_tmp; |
| uart_1_data.buffer_in_len_tmp = 0; |
| } |
| } |
| |
| |
| if (RCSTAbits.OERR == 1) { |
| // We've overrun the USART and must reset |
| RCSTA1bits.CREN = 0; // Reset UART1 |
| RCSTA1bits.CREN = 0; // Reset UART1 |
| RCSTA1bits.CREN = 1; |
| TXSTA1bits.TXEN = 0; // Kill anything currently sending |
| DBG_PRINT_UART("UART1: overrun\r\n"); |
| DBG_PRINT_UART("UART1: (ERROR) overrun\r\n"); |
| TXSTA1bits.TXEN = 0; // Kill anything currently sending |
| } |
| } |
| |
| 99,8 → 112,8 |
|---|
| TXREG1 = uart_1_data.buffer_out[uart_1_data.buffer_out_ind]; |
| uart_1_data.buffer_out_ind++; |
| } else { |
| while (!TXSTA1bits.TRMT); // Wait for last byte to finish sending |
| TXSTA1bits.TXEN = 0; // End transmission and disable TX interrupt |
| while (!TXSTA1bits.TRMT); // Wait for last byte to finish sending |
| TXSTA1bits.TXEN = 0; // End transmission and disable TX interrupt |
| uart_1_data.buffer_out_ind = 0; |
| uart_1_data.buffer_out_len = 0; |
| } |
| 108,35 → 121,39 |
|---|
| |
| void UART1_WriteS(const rom char *fmt, ...) { |
| va_list args; |
| while (TXSTA1bits.TXEN); // Wait for previous message to finish sending |
| while (TXSTA1bits.TXEN); // Wait for previous message to finish sending |
| va_start(args, fmt); |
| vsprintf((char *)uart_1_data.buffer_out, fmt, args); |
| vsprintf((char *) uart_1_data.buffer_out, fmt, args); |
| va_end(args); |
| uart_1_data.buffer_out_len = strlen((char *)uart_1_data.buffer_out); |
| uart_1_data.buffer_out_len = strlen((char *) uart_1_data.buffer_out); |
| uart_1_data.buffer_out_ind = 1; |
| TXREG1 = uart_1_data.buffer_out[0]; // Put first byte in TSR |
| TXSTA1bits.TXEN = 1; // Begin transmission |
| TXSTA1bits.TXEN = 1; // Begin transmission |
| } |
| |
| void UART1_WriteB(const char *msg, unsigned char length) { |
| unsigned char i; |
| while (TXSTA1bits.TXEN); // Wait for previous message to finish sending |
| while (TXSTA1bits.TXEN); // Wait for previous message to finish sending |
| uart_1_data.buffer_out_len = length; |
| uart_1_data.buffer_out_ind = 1; |
| for (i = 0; i < length; i++) { |
| for (i = 0; i < length; i++) { |
| uart_1_data.buffer_out[i] = msg[i]; |
| } |
| TXREG1 = uart_1_data.buffer_out[0]; // Put first byte in TSR |
| TXSTA1bits.TXEN = 1; // Begin transmission |
| TXSTA1bits.TXEN = 1; // Begin transmission |
| } |
| |
| unsigned char UART1_Buffer_Len() { |
| return uart_1_data.buffer_in_len; |
| } |
| |
| /* Reader interface to the UART buffer, returns the number of bytes read */ |
| unsigned char UART1_Read(char *buffer) { |
| unsigned char UART1_Read_Buffer(unsigned char *buffer) { |
| unsigned char i = 0; |
| while (uart_1_data.buffer_in_len != 0) { |
| buffer[i] = uart_1_data.buffer_in[uart_1_data.buffer_in_read_ind]; |
| i++; |
| if (uart_1_data.buffer_in_read_ind == MAXUARTBUF-1) { |
| if (uart_1_data.buffer_in_read_ind == MAXUARTBUF - 1) { |
| uart_1_data.buffer_in_read_ind = 0; |
| } else { |
| uart_1_data.buffer_in_read_ind++; |