; P2.5 - J2.10 <---- SD_CD (Card Detect)
MOV #-1,&PAREN ; all inputs with pull resistors
- BIS #00001h,&PADIR ; all pins as input else LED1 as output
+ MOV #1,&PADIR ; all pins as input else LED1 as output
MOV #0FFFEh,&PAOUT ; all pins with pullup resistors else LED1 = output low
.IFDEF UCA0_TERM
.ENDIF
.IFDEF TERMINAL4WIRES
-
-; RTS output must be wired to the CTS input of UART2USB bridge
+; RTS output is wired to the CTS input of UART2USB bridge
; configure RTS as output high (false) to disable RX TERM during start FORTH
HANDSHAKOUT .equ P2OUT
HANDSHAKIN .equ P2IN
-RTS .equ 1 ; P2.0 bit position
-
- BIS.B #1,&P2OUT ; P2.0 RTS as output high
-
- .IFDEF TERMINAL5WIRES ; included in 4WIRES configuration
-
+RTS .equ 1 ; P2.0
+ BIS.B #RTS,&P2DIR ; RTS as output high
+ .IFDEF TERMINAL5WIRES
; CTS input must be wired to the RTS output of UART2USB bridge
-; configure CTS as input low (true)
-CTS .equ 2 ; P2.1 bit position
- BIC.B #2,&P2DIR ; CTS input pull down resistor
-
+; configure CTS as input low (true) to avoid lock when CTS is not wired
+CTS .equ 2 ; P2.1
+ BIC.B #CTS,&P2OUT ; CTS input pulled down
.ENDIF ; TERMINAL5WIRES
-
.ENDIF ; TERMINAL4WIRES
-SD_CD .equ 20h
+
+SD_CD .equ 20h ; P2.5
SD_CDIN .equ P2IN
; ----------------------------------------------------------------------
; FRAM config
; ----------------------------------------------------------------------
- .IF FREQUENCY = 16
+ .IF (FREQUENCY >8 ) && ( FREQUENCY <= 16)
MOV.B #0A5h, &FRCTL0_H ; enable FRCTL0 access
MOV.B #10h, &FRCTL0 ; 1 waitstate @ 16 MHz
MOV.B #01h, &FRCTL0_H ; disable FRCTL0 access
- .ENDIF
-
- .IF FREQUENCY = 24
+ .ELSEIF FREQUENCY > 16
MOV.B #0A5h, &FRCTL0_H ; enable FRCTL0 access
MOV.B #20h, &FRCTL0 ; 2 waitstate @ 24 MHz
MOV.B #01h, &FRCTL0_H ; disable FRCTL0 access
; CS code for MSP430FR2355
-; to measure REFO frequency, output the ACLK on P1.1:
+; to measure SMCLK frequency, wires SMCLK on P1.0:
+; BIS.B #1,&P1SEL1
+; BIS.B #1,&P1DIR
+
+; to measure REFO frequency, wires ACLK on P1.1:
; BIS.B #2,&P1SEL1
; BIS.B #2,&P1DIR
-; result : REFO = xx.xxx kHz
.IF FREQUENCY = 0.5
MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
MOV #00B6h,&CSCTL1 ; Set 8MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
-; MOV #00F2h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F2h
- ; fCOCLKDIV = 32768 x (242+1) = 7.963 MHz ; measured : 7.943MHz
; MOV #00F3h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F3h
; fCOCLKDIV = 32768 x (243+1) = 7.995 MHz ; measured : 7.976MHz
MOV #00F4h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F4h
; MOV #00F5h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F5h
; fCOCLKDIV = 32768 x (245+1) = 8.061 MHz ; measured : 8.042MHz
-
-; MOV #00F8h,&CSCTL2 ; don't work with cp2102 (by low value)
-; MOV #00FAh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=FAh
-
; =====================================
MOV #128,X
MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
MOV #00B8h,&CSCTL1 ; Set 12MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
-; MOV #016Ch,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E6h
- ; fCOCLKDIV = 32768 x 364+1) = 12.960 MHz ; measured : 11.xxxMHz
; MOV #016Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E7h
; fCOCLKDIV = 32768 x 365+1) = 11.993 MHz ; measured : 11.xxxMHz
MOV #016Eh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E8h
MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
MOV #00BAh,&CSCTL1 ; Set 16MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
-; MOV #01E6h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E6h
- ; fCOCLKDIV = 32768 x 486+1) = 15.958 MHz ; measured : 15.92MHz
; MOV #01E7h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E7h
; fCOCLKDIV = 32768 x 487+1) = 15.991 MHz ; measured : 15.95MHz
MOV #01E8h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E8h
MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
MOV #00BCh,&CSCTL1 ; Set 20MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
-; MOV #0260h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=260h
- ; fCOCLKDIV = 32768 x 608+1) = 19.956 MHz ; measured : 19.xxxMHz
; MOV #0261h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=261h
; fCOCLKDIV = 32768 x 609+1) = 19.988 MHz ; measured : 19.xxxMHz
MOV #0262h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=262h
MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
MOV #00BEh,&CSCTL1 ; Set 24MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
-; MOV #02DAh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=2DAh
- ; fCOCLKDIV = 32768 x 730+1) = 23.953 MHz ; measured : 23.xxxMHz
; MOV #02DBh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=2DBh
; fCOCLKDIV = 32768 x 731+1) = 23.986 MHz ; measured : 23.xxxMHz
MOV #02DCh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=2DCh
.ENDIF
BIS &SYSRSTIV,&SAVE_SYSRSTIV; store volatile SYSRSTIV preserving a pending request for DEEP_RST
- CMP #2,&SAVE_SYSRSTIV ; POWER ON ?
- JZ ClockWaitX ; yes
- .word 0749h ; no RRUM #1,X --> wait anyway 250 ms because FLL lock time = 200 ms
+; MOV &SAVE_SYSRSTIV,TOS ;
+; CMP #2,TOS ; POWER ON ?
+; JZ ClockWaitX ; yes
+; RRUM #1,X ; wait only 250 ms
ClockWaitX MOV #5209,Y ; wait 0.5s before starting after POR
ClockWaitY SUB #1,Y ;1
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