#if defined(_at90usb162_) || defined(_atmega32u4_) || defined(_at90usb646_) || defined(_at90usb1286_) // AVR
uint8_t tmp = UDR1;
#elif defined(_mk20dx128_) // ARM
- // TODO
- uint8_t tmp = 0;
+ // Exit out if nothing to do
+ /*
+ if ( !(UART0_S1 & UART_S1_RDRF ) )
+ {
+ sei();
+ return;
+ }
+ */
+
+ // Only doing single byte FIFO here
+ uint8_t tmp = UART0_D;
+ print("YAYA");
#endif
// Debug
char tmpStr[6];
hexToStr( tmp, tmpStr );
- dPrintStrs( tmpStr, " " ); // Debug
+ dPrintStrsNL( tmpStr, " " ); // Debug
// TODO
{
// Setup the the USART interface for keyboard data input
- // TODO
- // Setup baud rate
+ // Setup baud rate - 1205 Baud
// 16 MHz / ( 16 * Baud ) = UBRR
- // Baud: 4817 -> 16 MHz / ( 16 * 4817 ) = 207.5981
- // Thus baud setting = 208
- uint16_t baud = 208; // Max setting of 4095
+ // Baud: 1205 -> 16 MHz / ( 16 * 1205 ) = 829.8755
+ // Thus baud setting = 830
+ uint16_t baud = 830; // Max setting of 4095
UBRR1H = (uint8_t)(baud >> 8);
UBRR1L = (uint8_t)baud;
// Enable the receiver, transmitter, and RX Complete Interrupt
+ // TODO - Only receiver, and rx interrupt
UCSR1B = 0x98;
// Set frame format: 8 data, 1 stop bit, odd parity
// Asynchrounous USART mode
+ // TODO - Even parity
UCSR1C = 0x36;
// Reset the keyboard before scanning, we might be in a wierd state
#elif defined(_mk20dx128_) // ARM
{
// Setup the the UART interface for keyboard data input
+ SIM_SCGC4 |= SIM_SCGC4_UART0; // Disable clock gating
- // Setup baud rate
- // TODO
+ // Pin Setup for UART0
+ PORTB_PCR16 = PORT_PCR_PE | PORT_PCR_PS | PORT_PCR_PFE | PORT_PCR_MUX(3); // RX Pin
+ PORTB_PCR17 = PORT_PCR_DSE | PORT_PCR_SRE | PORT_PCR_MUX(3); // TX Pin
+
+ // Setup baud rate - 1205 Baud
+ // 48 MHz / ( 16 * Baud ) = BDH/L
+ // Baud: 1205 -> 48 MHz / ( 16 * 1205 ) = 2489.6266
+ // Thus baud setting = 2490
+ // NOTE: If finer baud adjustment is needed see UARTx_C4 -> BRFA in the datasheet
+ uint16_t baud = 2490; // Max setting of 8191
+ UART0_BDH = (uint8_t)(baud >> 8);
+ UART0_BDL = (uint8_t)baud;
+
+ // 8 bit, Even Parity, Idle Character bit after stop
+ UART0_C1 = ~UART_C1_M | UART_C1_PE | ~UART_C1_PT | UART_C1_ILT;
+
+ // Number of bytes in FIFO before TX Interrupt
+ UART0_TWFIFO = 1;
+
+ // Number of bytes in FIFO before RX Interrupt
+ UART0_RWFIFO = 1;
+
+ // TX FIFO Disabled, TX FIFO Size 1 (Max 8 datawords), RX FIFO Enabled, RX FIFO Size 1 (Max 8 datawords)
+ // TX/RX FIFO Size:
+ // 0x0 - 1 dataword
+ // 0x1 - 4 dataword
+ // 0x2 - 8 dataword
+ UART0_PFIFO = ~UART_PFIFO_TXFE | /*TXFIFOSIZE*/ (0x0 << 4) | ~UART_PFIFO_RXFE | /*RXFIFOSIZE*/ (0x0);
+
+ // TX Disabled, RX Enabled, RX Interrupt Enabled
+ UART0_C2 = UART_C2_TE | UART_C2_RE | UART_C2_RIE;
+
+ // Reciever Inversion Disabled
+ UART0_S2 = ~UART_S2_RXINV;
+
+ // Transmit Inversion Disabled
+ UART0_C3 = ~UART_S2_TXINV;
+
+ // Add interrupt to the vector table
+ NVIC_ENABLE_IRQ( IRQ_UART0_STATUS );
// Reset the keyboard before scanning, we might be in a wierd state
scan_resetKeyboard();
// Main Detection Loop
inline uint8_t scan_loop()
{
+ UART0_D = 0x56;
+ _delay_ms( 100 );
return 0;
}
}
}
-// Send data
+// Send data
+// NOTE: Example only, MBC-55X cannot receive user data
uint8_t scan_sendData( uint8_t dataPayload )
{
// Debug
#if defined(_at90usb162_) || defined(_atmega32u4_) || defined(_at90usb646_) || defined(_at90usb1286_) // AVR
UDR1 = dataPayload;
#elif defined(_mk20dx128_) // ARM
- // TODO
+ UART0_D = dataPayload;
#endif
return 0;