WebSVN - Projects - Diff - Rev 459 and 465

 volatile uint8_t last_RC_Quality = 255;
 // 16bit should be enough, normal LiPos don't last that long
 volatile uint16_t uptime = 0;
+volatile uint16_t timer = 0;
-volatile uint16_t timer = 0;
+volatile uint8_t short_timer = 0;
 // remember last time data was received
 // battery voltages
 uint8_t min_voltage = 0;
 uint8_t max_voltage = 0;
 // Flags
-uint8_t COSD_FLAGS = 0;
+uint8_t COSD_FLAGS = 0, COSD_FLAGS2;
 /* ##########################################################################
  * debounce buttons
 #if !(ALLCHARSDEBUG|(WRITECHARS != -1))
 /* ##########################################################################
  * timer stuff
  * ##########################################################################*/
+/* ##########################################################################
+ * STROM TEST
+ * ##########################################################################*/
+#define INT0_HIGH                       PORTD |=  (1 << PD2);
+#define INT0_LOW                        PORTD &= ~(1 << PD2);
+void SpiMasterInit(void)
+{
+        volatile char IOReg;
+        // set PB4(/SS), PB5(MOSI), PB7(SCK) as output
+        DDRB  = (1<<PB4)|(1<<PB5)|(1<<PB7);
+                PORTB |= (1 << PB4); // pullup SS
+        // enable SPI Interrupt and SPI in Master Mode with SCK = CK/128
+        SPCR  = (1<<SPIE)|(1<<SPE)|(1<<MSTR)|(1<<SPR0)|(1<<SPR1);
+        IOReg   = SPSR;                         // clear SPIF bit in SPSR
+        IOReg   = SPDR;
+        //sei(); // we do it later
+}
+volatile size_t icnt = 0;
+volatile unsigned char * iptr;
+volatile unsigned char spi_cmd[5];
+volatile uint8_t spi_ready = 1;
+int16_t ampere = 0;
+ISR(SPI_STC_vect)
+{
+    /* Empfangenes Byte im Puffer ablegen. */
+    *iptr++ = SPDR;
+    /* Zähler dekrementieren. */
+    icnt--;
+    /* Falls Zähler noch nicht 0 ist... */
+    if (icnt) {
+                ///_delay_ms(1);
+        /* ...nächstes Byte senden. */
+        //SPDR = *iptr;
+                spi_ready = 1;
+    }
+    else {
+        /* ...andernfalls Interrupt Modus deaktivieren. */
+        SPCR &= ~_BV(SPIE);
+                INT0_HIGH
+                //_delay_ms(1);
+    }
+}
+int TransferIsBusy(void)
+{
+    return SPCR & _BV(SPIE);
+}
+void StartTransfer(unsigned char *data, size_t len)
+{
+        INT0_LOW
+    /* Interrupt Datenpointer und Zähler setzen. */
+    iptr = data;
+    icnt = len;
+    /* SPI Interrupt aktivieren und Transfer anstossen. */
+    SPCR |= _BV(SPIE);
+    SPDR = *iptr;
+}
+/* ##########################################################################
+ * / STROM TEST END
+ * ##########################################################################*/
 /**
  * timer kicks in every 1000uS ^= 1ms
  */
 ISR(TIMER0_OVF_vect) {
     OCR0 = 15; // preload
     if (!timer--) {
         uptime++;
         timer = 999;
         seconds_since_last_data++;
+    }
+        short_timer++;
+        if (spi_ready && icnt) {
+                SPDR = *iptr;
+        }
-}
+}
 /* ##########################################################################
  * A simple config menu for the flags
     clear();
     // update flags to paint display again because of clear
     COSD_FLAGS &= ~COSD_ICONS_WRITTEN;
+}
-#endif // ends !(ALLCHARSDEBUG|(WRITECHARS != -1))
+#endif // ends !(ALLCHARSDEBUG|(WRITECHARS != -1))#endif // ends !(ALLCHARSDEBUG|(WRITECHARS != -1))
 /* ##########################################################################
  * MAIN
+ * ##########################################################################*/
- * ##########################################################################*/
+int main(void) {
 int main(void) {
     // set up FLAGS, compiler should flatten this one
     COSD_FLAGS = (NTSC << 0);
     COSD_FLAGS |= (HUD << 1);
     // set up timer
     TCCR0 |= (1 << CS00) | (1 << CS01); // timer0 prescaler 64
     OCR0 = 15; // preload
     TIMSK |= (1 << TOIE0); // enable overflow timer0
+        DDRD |= (1 << PD2); // PD2 output (INT0)
+        SpiMasterInit();
     // enable interrupts
+    sei();
     sei();
 #endif
     //write_ascii_string(2,  7, "         CaScAdE          ");
     char* directions[8] = {"NE", "E ", "SE", "S ", "SW", "W ", "NW", "N "};
     //char arrowdir[8] = {218, 217, 224, 223, 222, 221, 220, 219};
+#endif
 #endif
+    while (1) {
+                if (!icnt && spi_ready) {
+                        short_timer = 0;
+                        ampere = spi_cmd[1] << 8;
+                        ampere |= spi_cmd[2];
+                        //write_ascii_char(7+4*30, spi_cmd[0]);
+                        if (spi_cmd[0] == 'd') {
+                                COSD_FLAGS2 |= COSD_FLAG_STROMREC;
+                                //write_ascii_char(8+4*30, 'v'); // valid
+                        } else {
+                                COSD_FLAGS2 &= ~COSD_FLAG_STROMREC;
+                                //write_ascii_char(8+4*30, 'i'); // invalid
+                        }
+                        spi_cmd[0] = 'A';
+                        spi_cmd[1] = 'B';
+                        spi_cmd[2] = 'C';
                         StartTransfer((unsigned char*)spi_cmd, 3);
     while (1) {
         if (rxd_buffer_locked) {
             if (COSD_FLAGS & COSD_FLAG_HUD) {
 #if FCONLY

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(root)/C-OSD/trunk/main.c/ - Rev 459 → 465