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-rw-r--r--src/display.cc25
-rw-r--r--src/display.h1
-rw-r--r--src/main.cc3
-rw-r--r--src/modem.cc50
-rw-r--r--src/modem.h1
5 files changed, 45 insertions, 35 deletions
diff --git a/src/display.cc b/src/display.cc
index 4215983..30a441f 100644
--- a/src/display.cc
+++ b/src/display.cc
@@ -9,8 +9,6 @@
Display display;
-uint8_t teststr[] = {'O', 'h', 'a', 'i', '!', 0};
-
void Display::disable()
{
TIMSK0 &= ~_BV(TOIE0);
@@ -30,15 +28,7 @@ void Display::enable()
TIMSK0 = _BV(TOIE0);
}
-/*
- * Draws a single display column. This function should be called at least once
- * per millisecond.
- *
- * Current configuration:
- * Called every 256 microseconds. The whole display is refreshed every 2048us,
- * giving a refresh rate of ~500Hz
- */
-ISR(TIMER0_OVF_vect)
+void Display::multiplex()
{
static uint8_t active_col = 0;
static uint16_t scroll = 0;
@@ -89,3 +79,16 @@ ISR(TIMER0_OVF_vect)
}
}
}
+
+/*
+ * Draws a single display column. This function should be called at least once
+ * per millisecond.
+ *
+ * Current configuration:
+ * Called every 256 microseconds. The whole display is refreshed every 2048us,
+ * giving a refresh rate of ~500Hz
+ */
+ISR(TIMER0_OVF_vect)
+{
+ display.multiplex();
+}
diff --git a/src/display.h b/src/display.h
index d239e18..6545caa 100644
--- a/src/display.h
+++ b/src/display.h
@@ -9,6 +9,7 @@ class Display {
Display() {};
void enable(void);
void disable(void);
+ void multiplex(void);
char string[128];
};
diff --git a/src/main.cc b/src/main.cc
index f665e18..9558109 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -25,7 +25,8 @@ int main (void)
display.string[2] = 'a';
display.string[3] = 'i';
display.string[4] = '!';
- display.string[5] = 0;
+ display.string[5] = ' ';
+ display.string[6] = 0;
display.enable();
modem.enable();
diff --git a/src/modem.cc b/src/modem.cc
index 2eae685..0a89586 100644
--- a/src/modem.cc
+++ b/src/modem.cc
@@ -45,9 +45,31 @@ uint8_t Modem::buffer_get() {
}
/*
- * Pin Change Interrupt Vector. This is The Modem.
+ * Start the modem by enabling Pin Change Interrupts & Timer
*/
-ISR(PCINT3_vect) {
+void Modem::enable() {
+ /* Enable R1 */
+ DDRA |= _BV(PA3);
+ PORTA |= _BV(PA3);
+
+ /* Modem pin as input */
+ MODEM_DDR &= ~_BV(MODEM_PIN);
+
+ /* Enable Pin Change Interrupts and PCINT for MODEM_PIN */
+ MODEM_PCMSK |= _BV(MODEM_PCINT);
+ PCICR |= _BV(MODEM_PCIE);
+
+ /* Timer: TCCR1: CS10 and CS11 bits: 8MHz clock with Prescaler 64 = 125kHz timer clock */
+ TCCR1B = _BV(CS11) | _BV(CS10);
+}
+
+void Modem::disable()
+{
+ PORTA &= ~_BV(PA3);
+ DDRA &= ~_BV(PA3);
+}
+
+void Modem::receive() {
/* Static variables instead of globals to keep scope inside ISR */
static uint8_t modem_bit = 0;
static uint8_t modem_bitlen = 0;
@@ -81,26 +103,8 @@ ISR(PCINT3_vect) {
}
/*
- * Start the modem by enabling Pin Change Interrupts & Timer
+ * Pin Change Interrupt Vector. This is The Modem.
*/
-void Modem::enable() {
- /* Enable R1 */
- DDRA |= _BV(PA3);
- PORTA |= _BV(PA3);
-
- /* Modem pin as input */
- MODEM_DDR &= ~_BV(MODEM_PIN);
-
- /* Enable Pin Change Interrupts and PCINT for MODEM_PIN */
- MODEM_PCMSK |= _BV(MODEM_PCINT);
- PCICR |= _BV(MODEM_PCIE);
-
- /* Timer: TCCR1: CS10 and CS11 bits: 8MHz clock with Prescaler 64 = 125kHz timer clock */
- TCCR1B = _BV(CS11) | _BV(CS10);
-}
-
-void Modem::disable()
-{
- PORTA &= ~_BV(PA3);
- DDRA &= ~_BV(PA3);
+ISR(PCINT3_vect) {
+ modem.receive();
}
diff --git a/src/modem.h b/src/modem.h
index a37d7d8..afd6aff 100644
--- a/src/modem.h
+++ b/src/modem.h
@@ -29,6 +29,7 @@ class Modem {
uint8_t buffer_get(void);
void enable(void);
void disable(void);
+ void receive(void);
};
extern Modem modem;