aboutsummaryrefslogtreecommitdiff
path: root/amforth-6.5/avr8/drivers/usart_3.asm
diff options
context:
space:
mode:
authorDimitri Sokolyuk <demon@dim13.org>2017-08-19 12:15:28 +0200
committerDimitri Sokolyuk <demon@dim13.org>2017-08-19 12:15:28 +0200
commit67d25d837ac55f28a366c0a3b262e439a6e75fc3 (patch)
treedf7715c7724c5935ab87c807f3b8b4ef529315e3 /amforth-6.5/avr8/drivers/usart_3.asm
parente0d6784e89dba33226c0edb815bb974486fa7c48 (diff)
Add AmForth
Diffstat (limited to 'amforth-6.5/avr8/drivers/usart_3.asm')
-rw-r--r--amforth-6.5/avr8/drivers/usart_3.asm31
1 files changed, 31 insertions, 0 deletions
diff --git a/amforth-6.5/avr8/drivers/usart_3.asm b/amforth-6.5/avr8/drivers/usart_3.asm
new file mode 100644
index 0000000..1745b31
--- /dev/null
+++ b/amforth-6.5/avr8/drivers/usart_3.asm
@@ -0,0 +1,31 @@
+ .equ BAUDRATE_LOW = UBRR3L
+ .equ BAUDRATE_HIGH = UBRR3H
+ .equ USART_C = UCSR3C
+ .equ USART_B = UCSR3B
+ .equ USART_A = UCSR3A
+ .equ USART_DATA = UDR3
+
+.equ URXCaddr = URXC3addr
+.equ UDREaddr = UDRE3addr
+
+.equ bm_USART_RXRD = 1 << RXC3
+.equ bm_USART_TXRD = 1 << UDRE3
+.equ bm_ENABLE_TX = 1 << TXEN3
+.equ bm_ENABLE_RX = 1 << RXEN3
+.equ bm_ENABLE_INT_RX = 1<<RXCIE3
+.equ bm_ENABLE_INT_TX = 1<<UDRIE3
+
+.equ bm_USARTC_en = 0
+.equ bm_ASYNC = 0 << 6
+.equ bm_SYNC = 1 << 6
+.equ bm_NO_PARITY = 0 << 4
+.equ bm_EVEN_PARITY = 2 << 4
+.equ bm_ODD_PARITY = 3 << 4
+.equ bm_1STOPBIT = 0 << 3
+.equ bm_2STOPBIT = 1 << 3
+.equ bm_5BIT = 0 << 1
+.equ bm_6BIT = 1 << 1
+.equ bm_7BIT = 2 << 1
+.equ bm_8BIT = 3 << 1
+
+.include "drivers/usart_common.asm"