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Diffstat (limited to 'amforth-6.5/msp430/devices/msp430g2553/words/usart-init.asm')
-rw-r--r--amforth-6.5/msp430/devices/msp430g2553/words/usart-init.asm13
1 files changed, 13 insertions, 0 deletions
diff --git a/amforth-6.5/msp430/devices/msp430g2553/words/usart-init.asm b/amforth-6.5/msp430/devices/msp430g2553/words/usart-init.asm
new file mode 100644
index 0000000..e8c7693
--- /dev/null
+++ b/amforth-6.5/msp430/devices/msp430g2553/words/usart-init.asm
@@ -0,0 +1,13 @@
+ CODEHEADER(XT_USART,6,"+usart")
+ ; USCI_A0
+ MOV.B #06,&P1SEL ; P1.1,2 are UART
+ MOV.B #06,&P1SEL2 ; P1.1,2 are UART
+
+ BIS.B #UCSWRST,&UCA0CTL1 ; SWRST while configuring!
+ MOV.B #00h,&UCA0CTL0 ; UART, 8N1, LSB first
+ MOV.B #81h,&UCA0CTL1 ; BRCLK = SMCLK, SWRST set
+ MOV.B #41h,&UCA0BR0 ; 9600 Baud at 8 MHz
+ MOV.B #03h,&UCA0BR1
+ MOV.B #04h,&UCA0MCTL ; UCBRFx=0, UCBRSx=2 for 9600 baud
+ BIC.B #UCSWRST,&UCA0CTL1 ; done configuring
+ NEXT