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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/msp430/devices/msp430fr5969/words/usart-init.asm
parente0d6784e89dba33226c0edb815bb974486fa7c48 (diff)
Add AmForth
Diffstat (limited to 'amforth-6.5/msp430/devices/msp430fr5969/words/usart-init.asm')
-rw-r--r--amforth-6.5/msp430/devices/msp430fr5969/words/usart-init.asm25
1 files changed, 25 insertions, 0 deletions
diff --git a/amforth-6.5/msp430/devices/msp430fr5969/words/usart-init.asm b/amforth-6.5/msp430/devices/msp430fr5969/words/usart-init.asm
new file mode 100644
index 0000000..322f05a
--- /dev/null
+++ b/amforth-6.5/msp430/devices/msp430fr5969/words/usart-init.asm
@@ -0,0 +1,25 @@
+ CODEHEADER(XT_USART,6,"+usart")
+
+ ;------------------------------------------------------------------------------
+ ; Init IO
+
+ bic #LOCKLPM5, &PM5CTL0 ; Unlock I/O pins
+ mov.b #3, &P2SEL1 ; Use P2.0/P2.1 pins for Communication
+ mov.b #0, &P2SEL0
+
+ ;------------------------------------------------------------------------------
+ ; Init serial communication
+
+ ; f Baud UCOS16 UCBR UCBRF UCBRS
+ ; 8000000 115200 1 4 5 0x55
+
+ mov #UCSWRST, &UCA0CTLW0 ; **Put state machine in reset**
+ bis #UCSSEL__SMCLK, &UCA0CTLW0 ; SMCLK
+
+ mov #4, &UCA0BRW ; 8 MHz 115200 Baud
+ mov #05501h|UCBRF_5, &UCA0MCTLW ; Modulation UCBRSx=55h, UCBRFx=5, UCOS16
+
+ bic #UCSWRST, &UCA0CTLW0 ; **Initialize USCI state machine**
+ ;------------------------------------------------------------------------------
+
+ NEXT