1 ; -*- coding: utf-8 -*-
3 ; Fast Forth For Texas Instrument MSP430FR4133
5 ; Copyright (C) <2016> <J.M. THOORENS>
7 ; This program is free software: you can redistribute it and/or modify
8 ; it under the terms of the GNU General Public License as published by
9 ; the Free Software Foundation, either version 3 of the License, or
10 ; (at your option) any later version.
12 ; This program is distributed in the hope that it will be useful,
13 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ; GNU General Public License for more details.
17 ; You should have received a copy of the GNU General Public License
18 ; along with this program. If not, see <http://www.gnu.org/licenses/>.
20 ; ======================================================================
21 ; INIT MSP-EXP430FR4133 board
22 ; ======================================================================
25 ; http://www.ebay.fr/itm/CP2102-USB-UART-Board-mini-Data-Transfer-Convertor-Module-Development-Board-/251433941479
27 ; for sd card socket be carefull : pin CD must be present !
28 ; http://www.ebay.com/itm/2-PCS-SD-Card-Module-Slot-Socket-Reader-For-Arduino-MCU-/181211954262?pt=LH_DefaultDomain_0&hash=item2a3112fc56
31 ; J101 eZ-FET <-> target
32 ; -----------------------
34 ; P3 <-> P4 - TEST - TEST
35 ; P5 <-> P6 - RST - RST
36 ; P7 <-> P8 - TX1 - P1.0 UCA0 TXD ---> RX UARTtoUSB module
37 ; P9 <->P10 - RX1 - P1.1 UCA0 RXD <--- TX UARTtoUSB module
38 ; P11<->P12 - CTS - P2.4
39 ; P13<->P14 - RTS - P2.3
40 ; P15<->P16 - VCC - 3V3
42 ; P19<->P20 - GND - VSS
44 ; Launchpad Header Left J1
45 ; ------------------------
57 ; Launchpad Header Right J2
58 ; -------------------------
60 ; P2 - P1.7 TA0.1/TDO/A7
61 ; P3 - P1.6 TA0.2/TDI/TCLK/A6
64 ; P6 - P5.2 UCB0SIMO/UCB0SDA
65 ; P7 - P5.3 UCB0SOMI/UCB0SCL
66 ; P8 - P1.3 UCA0STE/A3
67 ; P9 - P1.4 MCLK/TCK/A4
68 ; P10- P1.5 TA0CLK/TMS/A5
121 ; ===================================================================================
122 ; in case of 3.3V powered by UARTtoUSB bridge, open J13 straps {RST,TST,V+,5V} BEFORE
123 ; then wire VCC and GND of bridge onto J13 connector
124 ; ===================================================================================
126 ; ---------------------------------------------------
127 ; MSP - MSP-EXP430FR4133 LAUNCHPAD <--> OUTPUT WORLD
128 ; ---------------------------------------------------
134 ; +-4k7-< DeepRST <-- GND
136 ; P1.0 - UCA0 TXD J101.8 --+-> RX UARTtoUSB bridge
137 ; P1.1 - UCA0 RXD J101.10 <---- TX UARTtoUSB bridge
138 ; P2.3 - RTS J101.14 ----> CTS UARTtoUSB bridge (if TERMINALCTSRTS option)
139 ; VCC - J101.16 <---- VCC (optional supply from UARTtoUSB bridge - WARNING ! 3.3V !)
140 ; GND - J101.20 <---> GND (optional supply from UARTtoUSB bridge)
142 ; P2.7 - J1.5 <---- OUT IR_Receiver (1 TSOP32236)
144 ; P4.1 - LFXI 32768Hz quartz
145 ; P4.2 - LFXO 32768Hz quartz
147 ; P5.2 - UCB0 SDA/SIMO J2.6 <---> SDA I2C Slave
148 ; P5.3 - UCB0 SCL/SOMI J2.7 <---- SCL I2C Slave
150 ; P5.1 - UCB0 CLK J1.7 ----> orange SD_CLK
151 ; P5.2 - UCB0 SDA/SIMO J2.6 ----> grey SD_SDI
152 ; P5.3 - UCB0 SCL/SOMI J2.7 <---- purple SD_SDO
153 ; P8.0 - J1.6 <---- violin SD_CD (Card Detect)
154 ; P8.1 - J1.2 ----> brown SD_CS (Card Select)
156 ; P8.2 - Soft I2C_Master J1.9 ----> SDA software I2C Master
157 ; P8.3 - Soft I2C_Master J1.10 <---> SCL software I2C Master
160 ; ----------------------------------------------------------------------
161 ; INIT order : WDT, GPIOs, FRAM, Clock, UARTs...
162 ; ----------------------------------------------------------------------
164 ; ----------------------------------------------------------------------
165 ; POWER ON RESET AND INITIALIZATION : LOCK PMM_LOCKLPM5
166 ; ----------------------------------------------------------------------
168 ; BIS #LOCKLPM5,&PM5CTL0 ; unlocked by WARM
170 ; ----------------------------------------------------------------------
171 ; POWER ON RESET AND INITIALIZATION : WATCHDOG TIMER A
172 ; ----------------------------------------------------------------------
175 MOV #WDTPW+WDTHOLD+WDTCNTCL,&WDTCTL ; stop WDT
177 ; ----------------------------------------------------------------------
178 ; POWER ON RESET AND INITIALIZATION : I/O
179 ; ----------------------------------------------------------------------
181 ; ----------------------------------------------------------------------
182 ; POWER ON RESET AND INITIALIZATION : PORT1/2
183 ; ----------------------------------------------------------------------
185 ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
190 ; P1.0 - TX0 --> JP1 --> red LED1 --> GND
193 Deep_RST_IN .equ P1IN ; TERMINAL TX pin as FORTH Deep_RST
195 TERM_TXRX .equ 003h ; TX RX
200 .IFDEF TERMINAL4WIRES
202 ; RTS output is wired to the CTS input of UART2USB bridge
203 ; configure RTS as output high to disable RX TERM during start FORTH
205 HANDSHAKOUT .set P2OUT
208 RTS .set 8 ; P2.3 bit position
210 BIS #00800h,&PADIR ; all pins as input else RTS P2.3
211 BIS #-1,&PAREN ; all input pins with resistor
213 .IFDEF TERMINAL5WIRES
215 CTS .set 10h ; P2.4 bit position
217 MOV #0EFFFh,&PAOUT ; P2.3 (RTS) as output HIGH, P2.4 (CTS) I pull down, others I pull up,
221 MOV #-1,&PAOUT ; that acts as pull up resistor, and P2.3 (RTS) as output HIGH
223 .ENDIF ; TERMINAL5WIRES
227 ; PORTx default wanted state : pins as input with pullup resistor
229 MOV #-1,&PAOUT ; OUT1 for all pins
230 BIS #-1,&PAREN ; all pins with pullup resistors
232 .ENDIF ; TERMINAL4WIRES
234 ; ----------------------------------------------------------------------
235 ; POWER ON RESET AND INITIALIZATION : PORT3/4
236 ; ----------------------------------------------------------------------
238 ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
244 ; P4.1 - LFXI 32768Hz quartz
245 ; P4.2 - LFXO 32768Hz quartz
247 ; PORTx default wanted state : pins as input with pullup resistor
249 MOV #00100h,&PBDIR ; all pins as inputs else P4.0
250 MOV #0FEFFh,&PBOUT ; OUT1 for all pins else P4
251 BIS #0FEFFh,&PBREN ; pullup for all pins resistors else P4.0
253 ; ----------------------------------------------------------------------
254 ; POWER ON RESET AND INITIALIZATION : PORT5/6
255 ; ----------------------------------------------------------------------
257 ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
260 SD_SEL .equ PCSEL0 ; to configure UCB0
261 SD_REN .equ PCREN ; to configure pullup resistors
262 SD_BUS .equ 000Eh ; pins P5.1 as UCB0CLK, P5.2 as UCB0SIMO & P5.3 as UCB0SOMI
264 ; PORTx default wanted state : pins as input with pullup resistor
266 MOV #-1,&PCOUT ; all pins OUT1
267 BIS #-1,&PCREN ; all pins with pull resistors
269 ; ----------------------------------------------------------------------
270 ; POWER ON RESET AND INITIALIZATION : PORT7/8
271 ; ----------------------------------------------------------------------
273 SD_CS .equ 2 ; P8.1 as SD_CS
274 SD_CD .equ 1 ; P8.0 as SD_CD
279 ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
281 ; PORTx default wanted state : pins as input with pullup resistor
283 MOV #-1,&PDOUT ; all pins OUT1
284 BIS #-1,&PDREN ; all pins with pull resistors
286 ; ----------------------------------------------------------------------
288 ; ----------------------------------------------------------------------
291 MOV.B #0A5h, &FRCTL0_H ; enable FRCTL0 access
292 MOV.B #10h, &FRCTL0 ; 1 waitstate @ 16 MHz
293 MOV.B #01h, &FRCTL0_H ; disable FRCTL0 access
296 ; ----------------------------------------------------------------------
297 ; POWER ON RESET SYS config
298 ; ----------------------------------------------------------------------
300 ; BIC #1,&SYSCFG0 ; enable write program in FRAM
301 MOV #0A500h,&SYSCFG0 ; enable write MAIN and INFO
303 ; ----------------------------------------------------------------------
304 ; POWER ON RESET AND INITIALIZATION : CLOCK SYSTEM
305 ; ----------------------------------------------------------------------
307 ; CS code for EXP430FR4133
309 ; to measure REFO frequency, output ACLK on P8.1:
312 ; result : REFO = ? kHz
315 ; ===================================================================
316 ; need to adjust FLLN (and DCO) for each device of MSP430fr2xxx family ?
317 ; (no problem with MSP430FR5xxx families without FLL).
318 ; ===================================================================
320 ; .IF FREQUENCY = 0.5
322 ; MOV #0D6h,&CSCTL0 ; preset DCO = 0xD6 (measured value @ 0x180 ; to measure, type 0x180 @ U.)
324 ; MOV #0001h,&CSCTL1 ; Set 1MHZ DCORSEL,disable DCOFTRIM,Modulation
325 ;; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
326 ;; MOV #100Dh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Dh
327 ; ; fCOCLKDIV = 32768 x (13+1) = 0.459 MHz ; measured : MHz
328 ;; MOV #100Eh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Eh
329 ; ; fCOCLKDIV = 32768 x (14+1) = 0.491 MHz ; measured : MHz
330 ; MOV #100Fh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Fh
331 ; ; fCOCLKDIV = 32768 x (15+1) = 0.524 MHz ; measured : MHz
332 ;; =====================================
335 ; .ELSEIF FREQUENCY = 1
337 ; MOV #00B4h,&CSCTL0 ; preset DCO = 0xB4 (measured value @ 0x180 ; to measure, type HEX 0x180 ?)
339 ; MOV #0001h,&CSCTL1 ; Set 1MHZ DCORSEL,disable DCOFTRIM,Modulation
340 ;; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
341 ;; MOV #001Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Dh
342 ; ; fCOCLKDIV = 32768 x (29+1) = 0.983 MHz ; measured : 0.989MHz
343 ; MOV #001Eh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Eh
344 ; ; fCOCLKDIV = 32768 x (30+1) = 1.015 MHz ; measured : 1.013MHz
345 ;; MOV #001Fh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Fh
346 ; ; fCOCLKDIV = 32768 x (31+1) = 1.049 MHz ; measured : 1.046MHz
347 ;; =====================================
350 ; .ELSEIF FREQUENCY = 2
352 ; MOV #00B4h,&CSCTL0 ; preset DCO = 0xB4 (measured value @ 0x180 ; to measure, type HEX 0x180 ?)
354 ; MOV #0003h,&CSCTL1 ; Set 2MHZ DCORSEL,disable DCOFTRIM,Modulation
355 ;; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
356 ;; MOV #003Bh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Bh
357 ; ; fCOCLKDIV = 32768 x (59+1) = 1.996 MHz ; measured : MHz
358 ; MOV #003Ch,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Ch
359 ; ; fCOCLKDIV = 32768 x (60+1) = 1.998 MHz ; measured : MHz
360 ;; MOV #003Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Dh
361 ; ; fCOCLKDIV = 32768 x (61+1) = 2.031 MHz ; measured : MHz
362 ;; =====================================
365 ; .ELSEIF FREQUENCY = 4
367 ; MOV #00D2h,&CSCTL0 ; preset DCO = 0xD2 (measured value @ 0x180)
369 ; MOV #0005h,&CSCTL1 ; Set 4MHZ DCORSEL,disable DCOFTRIM,Modulation
370 ;; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
371 ;; MOV #0078h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=78h
372 ; ; fCOCLKDIV = 32768 x (120+1) = 3.965 MHz ; measured : 3.96MHz
374 ; MOV #0079h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=79h
375 ; ; fCOCLKDIV = 32768 x (121+1) = 3.997 MHz ; measured : 3.99MHz
377 ;; MOV #007Ah,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=7Ah
378 ; ; fCOCLKDIV = 32768 x (122+1) = 4.030 MHz ; measured : 4.020MHz
379 ;; =====================================
382 ; .ELSEIF FREQUENCY = 8
384 ; MOV #00F2h,&CSCTL0 ; preset DCO = 0xF2 (measured value @ 0x180)
386 ; MOV #0007h,&CSCTL1 ; Set 8MHZ DCORSEL,disable DCOFTRIM,Modulation
387 ;; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
388 ;; MOV #00F2h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F2h
389 ; ; fCOCLKDIV = 32768 x (242+1) = 7.963 MHz ; measured : 7.943MHz
390 ;; MOV #00F3h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F3h
391 ; ; fCOCLKDIV = 32768 x (243+1) = 7.995 MHz ; measured : 7.976MHz
392 ; MOV #00F4h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F4h
393 ; ; fCOCLKDIV = 32768 x (244+1) = 8.028 MHz ; measured : 8.009MHz
395 ;; MOV #00F5h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F5h
396 ; ; fCOCLKDIV = 32768 x (245+1) = 8.061 MHz ; measured : 8.042MHz
397 ; ; works with cp2102 and pl2303TA
398 ;; =====================================
401 ; .ELSEIF FREQUENCY = 16
403 ; MOV #0129h,&CSCTL0 ; preset DCO = 0x129 (measured value @ 0x180)
405 ; MOV #000Bh,&CSCTL1 ; Set 16MHZ DCORSEL,disable DCOFTRIM,Modulation
406 ;; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
407 ;; MOV #01E6h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E6h
408 ; ; fCOCLKDIV = 32768 x 486+1) = 15.958 MHz ; measured : 15.92MHz
409 ;; MOV #01E7h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E7h
410 ; ; fCOCLKDIV = 32768 x 487+1) = 15.991 MHz ; measured : 15.95MHz
411 ;; MOV #01E8h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E8h
412 ; ; fCOCLKDIV = 32768 x 488+1) = 16.023 MHz ; measured : 15.99MHz
413 ; MOV #01E9h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h
414 ; ; fCOCLKDIV = 32768 x 489+1) = 16.056 MHz ; measured : 16.02MHz
415 ;; MOV #01EAh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h
416 ; ; fCOCLKDIV = 32768 x 490+1) = 16.089 MHz ; measured : 16.02MHz
417 ;; =====================================
421 ; .error "bad frequency setting, only 0.5,1,2,4,8,16 MHz"
425 ;; LFXIN : P4.1, LFXOUT : P4.2
426 ; MOV #0600h,&PBSEL0 ; SEL0 for only P4.1,P4.2
427 ;; MOV #0000h,&CSCTL3 ; FLL select XT1, FLLREFDIV=0 (default value)
428 ; MOV #0000h,&CSCTL4 ; ACLOCK select XT1, MCLK & SMCLK select DCOCLKDIV
430 ; MOV #0010h,&CSCTL3 ; FLL select REFCLOCK, FLLREFDIV=0
431 ;; MOV #0100h,&CSCTL4 ; ACLOCK select REFO, MCLK & SMCLK select DCOCLKDIV (default value)
434 ; BIS &SYSRSTIV,&SAVE_SYSRSTIV; store volatile SYSRSTIV preserving a pending request for DEEP_RST
435 ;; CMP #2,&SAVE_SYSRSTIV ; POWER ON ?
436 ;; JZ ClockWaitX ; yes
437 ;; .word 0759h ; no RRUM #2,X --> wait only 125 ms
438 ;ClockWaitX MOV #5209,Y ; wait 0.5s before starting after POR
439 ; ; ...because FLL lock time = 280 ms
440 ;ClockWaitY SUB #1,Y ;1
441 ; JNZ ClockWaitY ;2 5209x3 = 15625 cycles delay = 15.625ms @ 1MHz
442 ; SUB #1,X ; x 32 @ 1 MHZ = 500ms
443 ; JNZ ClockWaitX ; time to stabilize power source ( 500ms )
447 ; MOV #058h,&CSCTL0 ; preset DCO = measured value @ 0x180 (88)
448 ; MOV #0001h,&CSCTL1 ; Set 1MHZ DCORSEL,disable DCOFTRIM,Modulation
449 MOV #1ED1h,&CSCTL0 ; preset MOD=31, DCO = measured value @ 0x180 (209)
450 MOV #00B0h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
451 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
452 ; MOV #100Dh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Dh
453 ; fCOCLKDIV = 32768 x (13+1) = 0.459 MHz ; measured : MHz
454 ; MOV #100Eh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Eh
455 ; fCOCLKDIV = 32768 x (14+1) = 0.491 MHz ; measured : MHz
456 MOV #100Fh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Fh
457 ; fCOCLKDIV = 32768 x (15+1) = 0.524 MHz ; measured : MHz
458 ; =====================================
461 .ELSEIF FREQUENCY = 1
463 ; MOV #100h,&CSCTL0 ; preset DCO = 256
464 ; MOV #00B1h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
465 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
466 MOV #00B0h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
467 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
468 ; MOV #001Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Dh
469 ; fCOCLKDIV = 32768 x (29+1) = 0.983 MHz ; measured : 0.989MHz
470 MOV #001Eh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Eh
471 ; fCOCLKDIV = 32768 x (30+1) = 1.015 MHz ; measured : 1.013MHz
472 ; MOV #001Fh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Fh
473 ; fCOCLKDIV = 32768 x (31+1) = 1.049 MHz ; measured : 1.046MHz
474 ; =====================================
477 .ELSEIF FREQUENCY = 2
479 ; MOV #100h,&CSCTL0 ; preset DCO = 256
480 ; MOV #00B3h,&CSCTL1 ; Set 2MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
481 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
482 MOV #00B2h,&CSCTL1 ; Set 2MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
483 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
484 ; MOV #003Bh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Bh
485 ; fCOCLKDIV = 32768 x (59+1) = 1.996 MHz ; measured : MHz
486 MOV #003Ch,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Ch
487 ; fCOCLKDIV = 32768 x (60+1) = 1.998 MHz ; measured : MHz
488 ; MOV #003Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Dh
489 ; fCOCLKDIV = 32768 x (61+1) = 2.031 MHz ; measured : MHz
490 ; =====================================
493 .ELSEIF FREQUENCY = 4
495 ; MOV #100h,&CSCTL0 ; preset DCO = 256
496 ; MOV #00B5h,&CSCTL1 ; Set 4MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
497 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
498 MOV #00B4h,&CSCTL1 ; Set 4MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
499 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
500 ; MOV #0078h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=78h
501 ; fCOCLKDIV = 32768 x (120+1) = 3.965 MHz ; measured : 3.96MHz
503 MOV #0079h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=79h
504 ; fCOCLKDIV = 32768 x (121+1) = 3.997 MHz ; measured : 3.99MHz
506 ; MOV #007Ah,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=7Ah
507 ; fCOCLKDIV = 32768 x (122+1) = 4.030 MHz ; measured : 4.020MHz
508 ; =====================================
511 .ELSEIF FREQUENCY = 8
513 ; MOV #100h,&CSCTL0 ; preset DCO = 256
514 ; MOV #00B7h,&CSCTL1 ; Set 8MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
515 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
516 MOV #00B6h,&CSCTL1 ; Set 8MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
517 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
518 ; MOV #00F2h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F2h
519 ; fCOCLKDIV = 32768 x (242+1) = 7.963 MHz ; measured : 7.943MHz
520 ; MOV #00F3h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F3h
521 ; fCOCLKDIV = 32768 x (243+1) = 7.995 MHz ; measured : 7.976MHz
522 MOV #00F4h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F4h
523 ; fCOCLKDIV = 32768 x (244+1) = 8.028 MHz ; measured : 8.009MHz
525 ; MOV #00F5h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F5h
526 ; fCOCLKDIV = 32768 x (245+1) = 8.061 MHz ; measured : 8.042MHz
528 ; MOV #00F8h,&CSCTL2 ; don't work with cp2102 (by low value)
529 ; MOV #00FAh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=FAh
531 ; =====================================
534 .ELSEIF FREQUENCY = 12
536 ; MOV #100h,&CSCTL0 ; preset DCO = 256
537 ; MOV #00B9h,&CSCTL1 ; Set 12MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
538 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
539 MOV #00B8h,&CSCTL1 ; Set 12MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
540 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
541 ; MOV #016Ch,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E6h
542 ; fCOCLKDIV = 32768 x 364+1) = 12.960 MHz ; measured : 11.xxxMHz
543 ; MOV #016Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E7h
544 ; fCOCLKDIV = 32768 x 365+1) = 11.993 MHz ; measured : 11.xxxMHz
545 MOV #016Eh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E8h
546 ; fCOCLKDIV = 32768 x 366+1) = 12.025 MHz ; measured : 12.xxxMHz
547 ; MOV #016Fh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h
548 ; fCOCLKDIV = 32768 x 367+1) = 12.058 MHz ; measured : 12.xxxMHz
549 ; =====================================
552 .ELSEIF FREQUENCY = 16
554 ; MOV #100h,&CSCTL0 ; preset DCO = 256
555 ; MOV #00BBh,&CSCTL1 ; Set 16MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
556 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
557 MOV #00BAh,&CSCTL1 ; Set 16MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
558 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
559 ; MOV #01E6h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E6h
560 ; fCOCLKDIV = 32768 x 486+1) = 15.958 MHz ; measured : 15.92MHz
561 ; MOV #01E7h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E7h
562 ; fCOCLKDIV = 32768 x 487+1) = 15.991 MHz ; measured : 15.95MHz
563 MOV #01E8h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E8h
564 ; fCOCLKDIV = 32768 x 488+1) = 16.023 MHz ; measured : 15.99MHz
565 ; MOV #01E9h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h
566 ; fCOCLKDIV = 32768 x 489+1) = 16.056 MHz ; measured : 16.02MHz
567 ; =====================================
571 .error "bad frequency setting, only 0.5,1,2,4,8,12,16 MHz"
575 ; MOV #0000h,&CSCTL3 ; FLL select XT1, FLLREFDIV=0 (default value)
576 MOV #0000h,&CSCTL4 ; ACLOCK select XT1, MCLK & SMCLK select DCOCLKDIV
578 BIS #0010h,&CSCTL3 ; FLL select REFCLOCK
579 ; MOV #0100h,&CSCTL4 ; ACLOCK select REFO, MCLK & SMCLK select DCOCLKDIV (default value)
582 BIS &SYSRSTIV,&SAVE_SYSRSTIV; store volatile SYSRSTIV preserving a pending request for DEEP_RST
583 CMP #2,&SAVE_SYSRSTIV ; POWER ON ?
585 .word 0749h ; no RRUM #1,X --> wait anyway 250 ms because FLL lock time = 200 ms
586 ClockWaitX MOV #5209,Y ; wait 0.5s before starting after POR
588 ClockWaitY SUB #1,Y ;1
589 JNZ ClockWaitY ;2 5209x3 = 15625 cycles delay = 15.625ms @ 1MHz
590 SUB #1,X ; x 32 @ 1 MHZ = 500ms
591 JNZ ClockWaitX ; time to stabilize power source ( 500ms )
593 ;WAITFLL BIT #300h,&CSCTL7 ; wait FLL lock