Add gpio::is_set() to read from _latch register, update command parsing

4 files changed, 34 insertions, 4 deletions

diff --git a/hal/pin.hpp b/hal/pin.hpp
index bbb80dc..ab9d3ad 100644
--- a/hal/pin.hpp
+++ b/hal/pin.hpp
@@ -17,12 +17,19 @@ class gpio
 public:
     virtual ~gpio() {}
 
-    // digital functions
+    // digital mode methods
     virtual void set_mode(unsigned m) = 0;
+
+    // digital output methods
     virtual void set(unsigned s) = 0;
-    virtual unsigned read() const = 0; 
+    virtual unsigned is_set() const = 0;
     virtual void toggle() = 0;
 
+    // digital input methods
+    virtual unsigned read() const = 0; 
+
+    // TODO: analog mode methods
+
 protected:
     gpio() {}
 };
@@ -47,6 +54,7 @@ public:
     void set_mode(mode m);
 
     unsigned read() const;
+    unsigned is_set() const;
 
     void set(unsigned s);
     void set(state s);
diff --git a/hal/pin.tpp b/hal/pin.tpp
index 42d03de..527ba0a 100644
--- a/hal/pin.tpp
+++ b/hal/pin.tpp
@@ -52,6 +52,12 @@ unsigned io_pin<bit>::read() const
 }
 
 template<unsigned bit>
+unsigned io_pin<bit>::is_set() const
+{
+    return (*_latch & (1<<bit)) ? 1 : 0;
+}
+
+template<unsigned bit>
 void io_pin<bit>::set(unsigned s)
 {
     if (s > 0)
diff --git a/hal/uart.hpp b/hal/uart.hpp
index b1dce29..65062f6 100644
--- a/hal/uart.hpp
+++ b/hal/uart.hpp
@@ -62,6 +62,11 @@ namespace uart
     template<unsigned dev>
     void initialize();
 
+#if 0
+    template<unsigned dev>
+    void set_baudrate(long baud);
+#endif
+
     // the following functions have been inlined 
 
     // template<unsigned dev>
diff --git a/hal/uart.tpp b/hal/uart.tpp
index 0ecd615..359722e 100644
--- a/hal/uart.tpp
+++ b/hal/uart.tpp
@@ -193,8 +193,9 @@ io_pin<3> led_green(&LATBbits, &TRISBbits, &PORTBbits);
 void __ISR(_UART_1_VECTOR, IPL1AUTO) usart_1_isr()
 {
     if (IFS1bits.U1RXIF) {
-        // debug
+        #ifdef DEBUG
         led_blue.toggle();
+        #endif
 
         // wait for data to be available
         while (!U1STAbits.URXDA);
@@ -213,10 +214,12 @@ void __ISR(_UART_1_VECTOR, IPL1AUTO) usart_1_isr()
     } 
     // on each interrupt call, send one character
     else if (IFS1bits.U1TXIF) {
+        #ifdef DEBUG
+        led_green.toggle();
+        #endif
 
         // disable TX interrupt flag
         IEC1bits.U1TXIE = 0;
-        led_green.toggle();
 
         // write data
         U1TXREG = static_cast<decltype(U1TXREG)>(uart::tx_buffer<1>().front());
@@ -298,6 +301,14 @@ namespace uart
         CFGCONbits.IOLOCK = 1; // lock   PPS
         hw::reglock();
     }
+
+#if 0
+    template<>
+    void set_baudrate<1>(long baud)
+    {
+        
+    }
+#endif
 }
 
 #endif
\ No newline at end of file