Merge pull request #415 from getoffmyhack/master

Hardware SPI support for ATmega128
olikraus · May 31, 2016 · 3922dd8 · 3922dd8
2 parents ec0acc2 + 807fbd0
commit 3922dd8
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/csrc/u8g_com_atmega_hw_spi.c b/csrc/u8g_com_atmega_hw_spi.c
@@ -96,13 +96,25 @@ uint8_t u8g_com_atmega_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void
       u8g_SetPIOutput(u8g, U8G_PI_RESET);
 
       U8G_ATOMIC_START();
+
+#if defined (__AVR_ATmega128__)
+
+      DDRB |= _BV(2);          /* D0, MOSI */
+      DDRB |= _BV(1);          /* SCK */
+      DDRB |= _BV(0);           /* slave select */
+
+      PORTB &= ~_BV(2);        /* D0, MOSI = 0 */
+      PORTB &= ~_BV(1);        /* SCK = 0 */
+#else
 
       DDRB |= _BV(3);          /* D0, MOSI */
       DDRB |= _BV(5);          /* SCK */
       DDRB |= _BV(2);		/* slave select */
 
       PORTB &= ~_BV(3);        /* D0, MOSI = 0 */
       PORTB &= ~_BV(5);        /* SCK = 0 */
+
+#endif
 
       U8G_ATOMIC_END();
 
@@ -136,7 +148,11 @@ uint8_t u8g_com_atmega_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void
       }
       else
       {
+#if defined (__AVR_ATmega128__)
+        PORTB &= ~_BV(1);        /* SCK = 0 */
+#else
         PORTB &= ~_BV(5);        /* SCK = 0 */
+#endif
         /* enable */
         u8g_SetPILevel(u8g, U8G_PI_CS, 0); /* CS = 0 (low active) */
       }