; -*- coding: utf-8 -*- ; Fast Forth For Texas Instrument MSP430FR5739 ; Tested on MSP-EXP430FR2433 launchpad ; ; Copyright (C) <2017> ; ; This program is free software: you can redistribute it and/or modify ; it under the terms of the GNU General Public License as published by ; the Free Software Foundation, either version 3 of the License, or ; (at your option) any later version. ; ; This program is distributed in the hope that it will be useful, ; but WITHOUT ANY WARRANTY; without even the implied warranty of ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ; GNU General Public License for more details. ; ; You should have received a copy of the GNU General Public License ; along with this program. If not, see . ; ====================================================================== ; INIT MSP-EXP430FR2433 board ; ====================================================================== ; J101 (7xjumper) ; "SBWTCK" ---> TEST ; "SBWTDIO" ---> RST ; "TXD" <--- P1.4 == UCA0TXD <-- UCA0TXDBUf ; "RXD" ---> P1.5 == UCA0RXD --> UCA0RXDBUF ; "3V3" <--> 3V3 ; "5V0" <--> 5V0 ; "GND" <--> GND ; SW1 -- P2.3 ; SW2 -- P2.7 ; LED1 - P1.0 ; LED2 - P1.1 ; I/O pins on J1: ; J1.1 - 3V3 ; J1.2 - P1.0 ; J1.3 - P1.5 ; J1.4 - P1.4 ; J1.5 - P1.6 ; J1.6 - P1.7 ; J1.7 - P2.4 ; J1.8 - P2.7 ; J1.9 - P1.3 ; J1.10- P1.2 ; I/O pins on J2: ; J2.11 - P2.0 ; J2.12 - P2.1 ; J2.13 - P3.1 ; J2.14 - P2.5 ; J2.15 - P2.6 ; J2.16 - RST ; J2.17 - P3.2 ; J2.18 - P2.2 ; J2.19 - P1.1 ; J2.20 - GND ; LFXTAL - P2.0 ; LFXTAL - P2.1 ; ====================================================================== ; MSP-EXP430FR2433 LAUNCHPAD <--> OUTPUT WORLD ; ====================================================================== ; +--4k7-< DeepRST switch <-- GND ; | ; P1.4 - UCA0 TXD J101.6 - <-+-> RX UARTtoUSB bridge ; P1.5 - UCA0 RXD J101.8 - <---- TX UARTtoUSB bridge ; P1.0 - RTS J1.2 - ----> CTS UARTtoUSB bridge (TERMINAL4WIRES) ; P1.1 - CTS J2.19 - <---- RTS UARTtoUSB bridge (TERMINAL5WIRES) ; P1.2 - UCB0 SDA J1.10 - <---> SDA I2C Master_Slave ; P1.3 - UCB0 SCL J1.9 - ----> SCL I2C Master_Slave ; P2.2 - ACLK J2.18 - <---- TSSOP32236 (IR RC5) ; P2.0 - J2.11 - ----> SD_CS (Card Select) ; P2.1 - J2.12 - <---- SD_CD (Card Detect) ; P2.4 - UCA1 CLK J1.7 - ----> SD_CLK ; P2.5 - UCA1 SOMI J2.14 - <---- SD_SDO ; P2.6 - UCA1 SIMO J2.15 - ----> SD_SDI ; P3.1 - J2.13 - ----> SCL I2C Soft_Master ; P3.2 - J2.17 - <---> SDA I2C Soft_Master ; P2.0 - J2.11 - <---- I2CTERM_SLA0 ; P2.1 - J2.12 - <---- I2CTERM_SLA1 ; P2.2 - ACLK J2.18 - <---- I2CTERM_SLA2 ; ---------------------------------------------------------------------- ; INIT order : WDT, GPIOs, FRAM, Clock, UARTs... ; ---------------------------------------------------------------------- ; ---------------------------------------------------------------------- ; POWER ON RESET AND INITIALIZATION : LOCK PMM_LOCKLPM5 ; ---------------------------------------------------------------------- ; BIS #LOCKLPM5,&PM5CTL0 ; unlocked by WARM ; ---------------------------------------------------------------------- ; POWER ON RESET AND INITIALIZATION : WATCHDOG TIMER A ; ---------------------------------------------------------------------- ; WDT code MOV #WDTPW+WDTHOLD+WDTCNTCL,&WDTCTL ; stop WDT ; ---------------------------------------------------------------------- ; POWER ON RESET AND INITIALIZATION : I/O ; ---------------------------------------------------------------------- ; ---------------------------------------------------------------------- ; POWER ON RESET AND INITIALIZATION : PORT1/2 ; ---------------------------------------------------------------------- ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ? ; PORT1 usage ; LED1 - P1.0 ; LED2 - P1.1 ; P1.4 - TXD TERMINAL + DEEP_RST ; P1.5 - RXD TERMINAL ; P1.0 - RTS TERMINAL ; P1.1 - CTS TERMINAL .IFDEF UCA0_TERM TXD .equ 10h ; P1.4 = TXD + FORTH Deep_RST pin RXD .equ 20h ; P1.5 TERM_BUS .equ 30h TERM_IN .equ P1IN TERM_SEL .equ P1SEL0 TERM_REN .equ P1REN .ENDIF .IFDEF UCA1_SD SD_SEL .equ PASEL0 ; to configure UCA1 SD_REN .equ PAREN ; to configure pullup resistors SD_BUS .equ 07000h ; pins P2.4 as UCA1CLK, P2.5 as UCA1SOMI & P2.6 as UCA1SIMO .ENDIF ; P2.1 <--- SD_CD (Card Detect) SD_CD .equ 2 SD_CDIN .equ P2IN ; P2.0 ---> SD_CS (Card Select) SD_CS .equ 1 SD_CSOUT .equ P2OUT SD_CSDIR .equ P2DIR .IFDEF UCA1_TERM TXD .equ 40h ; P2.6 = TXD + FORTH Deep_RST pin RXD .equ 20h ; P2.5 TERM_BUS .equ 60h TERM_IN .equ P2IN ; TERMINAL TX pin as FORTH Deep_RST TERM_SEL .equ P2SEL0 TERM_REN .equ P2REN .ENDIF MOV #-1,&PAREN ; all inputs with pull resistors MOV #00003h,&PADIR ; all pins as input else LED1/LED2 as output MOV #0FFFCh,&PAOUT ; all pins with pullup resistors and LED1/LED2 = output low .IFDEF TERMINAL4WIRES ; RTS output is wired to the CTS input of UART2USB bridge ; configure RTS as output high to disable RX TERM during start FORTH HANDSHAKOUT .equ P1OUT HANDSHAKIN .equ P1IN RTS .equ 1 ; P1.0 ; BIS.B #RTS,&P1DIR ; RTS as output high BIS.B #RTS,&P1OUT ; RTS as output high .IFDEF TERMINAL5WIRES ; CTS input must be wired to the RTS output of UART2USB bridge ; configure CTS as input low (true) to avoid lock when CTS is not wired CTS .equ 2 ; P1.1 BIC.B #CTS,&P1DIR ; CTS input pulled down ; BIC.B #CTS,&P1OUT ; CTS input pulled down .ENDIF ; TERMINAL5WIRES .ENDIF ; TERMINAL4WIRES .IFDEF UCB0_TERM ; for MSP_EXP430FR2433_I2C I2CM_BUS .equ 0Ch ; P1.2=SDA P1.3=SCL I2CM_SEL .equ P1SEL0 I2CM_REN .equ P1REN I2CM_OUT .equ P1OUT .ENDIF .IFDEF UCB0_I2CM ; for TERM2IIC add-on I2CT_BUS .equ 0Ch ; P1.2=SDA P1.3=SCL I2CT_SEL .equ P1SEL0 I2CT_REN .equ P1REN I2CT_OUT .equ P1OUT .ENDIF I2CT_SLA_BUS .equ 07h ; P2.0 P2.1 P2.1 I2CT_SLA_IN .equ P2IN I2CT_SLA_OUT .equ P2OUT I2CT_SLA_DIR .equ P2DIR I2CT_SLA_REN .equ P2REN ; ---------------------------------------------------------------------- ; POWER ON RESET AND INITIALIZATION : PORT3 ; ---------------------------------------------------------------------- ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ? ; PORT3 usage MOV.B #-1,&P3OUT ; OUT1 for all pins BIS.B #-1,&P3REN ; all pins with pull resistors ; ---------------------------------------------------------------------- ; FRAM config ; ---------------------------------------------------------------------- .IF FREQUENCY > 8 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 ; ---------------------------------------------------------------------- ; POWER ON RESET SYS config ; ---------------------------------------------------------------------- ; SYS code ; BIC #1,&SYSCFG0 ; enable write program in FRAM MOV #0A500h,&SYSCFG0 ; enable write MAIN and INFO ; ---------------------------------------------------------------------- ; POWER ON RESET AND INITIALIZATION : CLOCK SYSTEM ; ---------------------------------------------------------------------- ; CS code for EXP430FR2433 ; to measure REFO frequency, output ACLK on P2.2: ; BIS.B #4,&P2SEL1 ; BIS.B #4,&P2DIR ; result : REFO = 32.69kHz ; =================================================================== ; need to adjust FLLN (and DCO) for each device of MSP430fr2xxx family ? ; (no problem with MSP430FR5xxx families without FLL). ; =================================================================== ; .IF FREQUENCY = 0.5 ; ; MOV #0D6h,&CSCTL0 ; preset DCO = 0xD6 (measured value @ 0x180 ; to measure, type 0x180 @ U.) ; ; MOV #0001h,&CSCTL1 ; Set 1MHZ DCORSEL,disable DCOFTRIM,Modulation ;; ===================================== ; fCOCLKDIV = REFO x (FLLN+1) ;; MOV #100Dh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Dh ; ; fCOCLKDIV = 32768 x (13+1) = 0.459 MHz ; measured : MHz ;; MOV #100Eh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Eh ; ; fCOCLKDIV = 32768 x (14+1) = 0.491 MHz ; measured : MHz ; MOV #100Fh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Fh ; ; fCOCLKDIV = 32768 x (15+1) = 0.524 MHz ; measured : MHz ;; ===================================== ; MOV #8,X ; ; .ELSEIF FREQUENCY = 1 ; ; MOV #00B4h,&CSCTL0 ; preset DCO = 0xB4 (measured value @ 0x180 ; to measure, type HEX 0x180 ?) ; ; MOV #0001h,&CSCTL1 ; Set 1MHZ DCORSEL,disable DCOFTRIM,Modulation ;; ===================================== ; fCOCLKDIV = REFO x (FLLN+1) ;; MOV #001Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Dh ; ; fCOCLKDIV = 32768 x (29+1) = 0.983 MHz ; measured : 0.989MHz ; MOV #001Eh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Eh ; ; fCOCLKDIV = 32768 x (30+1) = 1.015 MHz ; measured : 1.013MHz ;; MOV #001Fh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Fh ; ; fCOCLKDIV = 32768 x (31+1) = 1.049 MHz ; measured : 1.046MHz ;; ===================================== ; MOV #16,X ; ; .ELSEIF FREQUENCY = 2 ; ; MOV #00B4h,&CSCTL0 ; preset DCO = 0xB4 (measured value @ 0x180 ; to measure, type HEX 0x180 ?) ; ; MOV #0003h,&CSCTL1 ; Set 2MHZ DCORSEL,disable DCOFTRIM,Modulation ;; ===================================== ; fCOCLKDIV = REFO x (FLLN+1) ;; MOV #003Bh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Bh ; ; fCOCLKDIV = 32768 x (59+1) = 1.996 MHz ; measured : MHz ;; MOV #003Ch,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Ch ; ; fCOCLKDIV = 32768 x (60+1) = 1.998 MHz ; measured : MHz ; MOV #003Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Dh ; ; fCOCLKDIV = 32768 x (61+1) = 2.031 MHz ; measured : MHz ;; ===================================== ; MOV #32,X ; ; .ELSEIF FREQUENCY = 4 ; ; MOV #00D2h,&CSCTL0 ; preset DCO = 0xD2 (measured value @ 0x180) ; ; MOV #0005h,&CSCTL1 ; Set 4MHZ DCORSEL,disable DCOFTRIM,Modulation ;; ===================================== ; fCOCLKDIV = REFO x (FLLN+1) ;; MOV #0078h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=78h ; ; fCOCLKDIV = 32768 x (120+1) = 3.965 MHz ; measured : 3.96MHz ; ; MOV #0079h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=79h ; ; fCOCLKDIV = 32768 x (121+1) = 3.997 MHz ; measured : 3.99MHz ; ;; MOV #007Ah,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=7Ah ; ; fCOCLKDIV = 32768 x (122+1) = 4.030 MHz ; measured : 4.020MHz ;; ===================================== ; MOV #64,X ; ; .ELSEIF FREQUENCY = 8 ; ; ; MOV #00F3h,&CSCTL0 ; preset DCO = 0xF2 (measured value @ 0x180) ; ; MOV #0007h,&CSCTL1 ; Set 8MHZ DCORSEL,disable DCOFTRIM,Modulation ;; ===================================== ; 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 ; ; fCOCLKDIV = 32768 x (244+1) = 8.028 MHz ; measured : 8.009MHz ; ;; 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 ; ; .ELSEIF FREQUENCY = 16 ; ; MOV #0129h,&CSCTL0 ; preset DCO = 0x129 (measured value @ 0x180) ; ; MOV #000Bh,&CSCTL1 ; Set 16MHZ DCORSEL,disable DCOFTRIM,Modulation ;; ===================================== ; 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 ; ; fCOCLKDIV = 32768 x 488+1) = 16.023 MHz ; measured : 15.99MHz ; MOV #01E9h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h ; ; fCOCLKDIV = 32768 x 489+1) = 16.056 MHz ; measured : 16.02MHz ;; ===================================== ; MOV #256,X .IF FREQUENCY = 0.5 ; MOV #058h,&CSCTL0 ; preset DCO = measured value @ 0x180 (88) ; MOV #0001h,&CSCTL1 ; Set 1MHZ DCORSEL,disable DCOFTRIM,Modulation MOV #1ED1h,&CSCTL0 ; preset MOD=31, DCO = measured value @ 0x180 (209) MOV #00B0h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1) ; MOV #100Dh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Dh ; fCOCLKDIV = 32768 x (13+1) = 0.459 MHz ; measured : MHz ; MOV #100Eh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Eh ; fCOCLKDIV = 32768 x (14+1) = 0.491 MHz ; measured : MHz MOV #100Fh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Fh ; fCOCLKDIV = 32768 x (15+1) = 0.524 MHz ; measured : MHz ; ===================================== MOV #8,X .ELSEIF FREQUENCY = 1 ; MOV #100h,&CSCTL0 ; preset DCO = 256 ; MOV #00B1h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255 MOV #00B0h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1) ; MOV #001Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Dh ; fCOCLKDIV = 32768 x (29+1) = 0.983 MHz ; measured : 0.989MHz MOV #001Eh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Eh ; fCOCLKDIV = 32768 x (30+1) = 1.015 MHz ; measured : 1.013MHz ; MOV #001Fh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Fh ; fCOCLKDIV = 32768 x (31+1) = 1.049 MHz ; measured : 1.046MHz ; ===================================== MOV #16,X .ELSEIF FREQUENCY = 2 ; MOV #100h,&CSCTL0 ; preset DCO = 256 ; MOV #00B3h,&CSCTL1 ; Set 2MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255 MOV #00B2h,&CSCTL1 ; Set 2MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1) ; MOV #003Bh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Bh ; fCOCLKDIV = 32768 x (59+1) = 1.996 MHz ; measured : MHz MOV #003Ch,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Ch ; fCOCLKDIV = 32768 x (60+1) = 1.998 MHz ; measured : MHz ; MOV #003Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Dh ; fCOCLKDIV = 32768 x (61+1) = 2.031 MHz ; measured : MHz ; ===================================== MOV #32,X .ELSEIF FREQUENCY = 4 ; MOV #100h,&CSCTL0 ; preset DCO = 256 ; MOV #00B5h,&CSCTL1 ; Set 4MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255 MOV #00B4h,&CSCTL1 ; Set 4MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1) ; MOV #0078h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=78h ; fCOCLKDIV = 32768 x (120+1) = 3.965 MHz ; measured : 3.96MHz MOV #0079h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=79h ; fCOCLKDIV = 32768 x (121+1) = 3.997 MHz ; measured : 3.99MHz ; MOV #007Ah,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=7Ah ; fCOCLKDIV = 32768 x (122+1) = 4.030 MHz ; measured : 4.020MHz ; ===================================== MOV #64,X .ELSEIF FREQUENCY = 8 ; MOV #100h,&CSCTL0 ; preset DCO = 256 ; MOV #00B7h,&CSCTL1 ; Set 8MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation 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 ; fCOCLKDIV = 32768 x (244+1) = 8.028 MHz ; measured : 8.009MHz ; 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 .ELSEIF FREQUENCY = 12 ; MOV #100h,&CSCTL0 ; preset DCO = 256 ; MOV #00B9h,&CSCTL1 ; Set 12MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation 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 ; fCOCLKDIV = 32768 x 366+1) = 12.025 MHz ; measured : 12.xxxMHz ; MOV #016Fh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h ; fCOCLKDIV = 32768 x 367+1) = 12.058 MHz ; measured : 12.xxxMHz ; ===================================== MOV #192,X .ELSEIF FREQUENCY = 16 ; MOV #100h,&CSCTL0 ; preset DCO = 256 ; MOV #00BBh,&CSCTL1 ; Set 16MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation 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 ; fCOCLKDIV = 32768 x 488+1) = 16.023 MHz ; measured : 15.99MHz ; MOV #01E9h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h ; fCOCLKDIV = 32768 x 489+1) = 16.056 MHz ; measured : 16.02MHz ; ===================================== MOV #256,X .ELSEIF .error "bad frequency setting, only 0.5,1,2,4,8,12,16 MHz" .ENDIF .IFDEF LF_XTAL ; MOV #0000h,&CSCTL3 ; FLL select XT1, FLLREFDIV=0 (default value) MOV #0000h,&CSCTL4 ; ACLOCK select XT1, MCLK & SMCLK select DCOCLKDIV .ELSE BIS #0010h,&CSCTL3 ; FLL select REFCLOCK ; MOV #0100h,&CSCTL4 ; ACLOCK select REFO, MCLK & SMCLK select DCOCLKDIV (default value) .ENDIF BIS &SYSRSTIV,&SAVE_SYSRSTIV; store volatile SYSRSTIV preserving a pending request for DEEP_RST ; 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 JNZ ClockWaitY ;2 5209x3 = 15625 cycles delay = 15.625ms @ 1MHz SUB #1,X ; x 32 @ 1 MHZ = 500ms JNZ ClockWaitX ; time to stabilize power source ( 500ms ) ;WAITFLL BIT #300h,&CSCTL7 ; wait FLL lock ; JNZ WAITFLL