1 ; -*- coding: utf-8 -*-
3 ; Fast Forth For Texas Instrument MSP430FR5739
4 ; Tested on MSP-EXP430FR2355 launchpad
6 ; Copyright (C) <2018> <J.M. THOORENS>
8 ; This program is free software: you can redistribute it and/or modify
9 ; it under the terms of the GNU General Public License as published by
10 ; the Free Software Foundation, either version 3 of the License, or
11 ; (at your option) any later version.
13 ; This program is distributed in the hope that it will be useful,
14 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ; GNU General Public License for more details.
18 ; You should have received a copy of the GNU General Public License
19 ; along with this program. If not, see <http://www.gnu.org/licenses/>.
21 ; ======================================================================
22 ; INIT MSP-EXP430FR2355 board
23 ; ======================================================================
28 ; "TXD" <--- P4.3 == UCA0TXD <-- UCA0TXDBUf
29 ; "RXD" ---> P4.2 == UCA0RXD --> UCA0RXDBUF
56 ; J3.23 - P1.4 A4 SEED
61 ; J3.28 - P1.1 A1 SEED
93 ; ======================================================================
94 ; MSP-EXP430FR2355 LAUNCHPAD <--> OUTPUT WORLD
95 ; ======================================================================
97 ; +--4k7-< DeepRST switch <-- GND
99 ; P4.3 - UCA1 TXD J101.6 - <-+-> RX UARTtoUSB bridge
100 ; P4.2 - UCA1 RXD J101.8 - <---- TX UARTtoUSB bridge
101 ; P2.0 - RTS J2.19 - ----> CTS UARTtoUSB bridge (TERMINAL4WIRES)
102 ; P2.1 - CTS J4.40 - <---- RTS UARTtoUSB bridge (TERMINAL5WIRES)
104 ; P1.2 - UCB0 SDA J1.10 - <---> SDA I2C Master_Slave
105 ; P1.3 - UCB0 SCL J1.9 - ----> SCL I2C Master_Slave
107 ; P2.2 - J2.18 - <---- TSSOP32236 (IR RC5)
109 ; P2.5 - J2.13 - <---- SD_CD (Card Detect)
110 ; P4.4 - J2.12 - ----> SD_CS (Card Select)
111 ; P4.5 - UCB1 CLK J1.7 - ----> SD_CLK
112 ; P4.6 - UCB1 SIMO J2.15 - ----> SD_SDI
113 ; P4.7 - UCB1 SOMI J2.14 - <---- SD_SDO
115 ; P6.0 - J4.39 - ----> SCL I2C Soft_Master
116 ; P6.1 - J4.38 - <---> SDA I2C Soft_Master
118 ; ----------------------------------------------------------------------
119 ; INIT order : WDT, GPIOs, FRAM, Clock, UARTs...
120 ; ----------------------------------------------------------------------
122 ; ----------------------------------------------------------------------
123 ; POWER ON RESET AND INITIALIZATION : LOCK PMM_LOCKLPM5
124 ; ----------------------------------------------------------------------
126 ; BIS #LOCKLPM5,&PM5CTL0 ; unlocked by WARM
128 ; ----------------------------------------------------------------------
129 ; POWER ON RESET AND INITIALIZATION : WATCHDOG TIMER A
130 ; ----------------------------------------------------------------------
133 MOV #WDTPW+WDTHOLD+WDTCNTCL,&WDTCTL ; stop WDT
135 ; ----------------------------------------------------------------------
136 ; POWER ON RESET AND INITIALIZATION : I/O
137 ; ----------------------------------------------------------------------
139 ; ----------------------------------------------------------------------
140 ; POWER ON RESET AND INITIALIZATION : PORT1/2
141 ; ----------------------------------------------------------------------
143 ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
148 ; UART RTS P2.0 - J2.19 ----> CTS UARTtoUSB bridge (TERMINAL4WIRES)
149 ; UART CTS P2.1 - J4.40 <---- RTS UARTtoUSB bridge (TERMINAL5WIRES)
151 ; P2.5 - J2.10 <---- SD_CD (Card Detect)
153 MOV #-1,&PAREN ; all inputs with pull resistors
154 BIS #00001h,&PADIR ; all pins as input else LED1 as output
155 MOV #0FFFEh,&PAOUT ; all pins with pullup resistors else LED1 = output low
158 ; UCA0_RXD - P1.6 - J1.3 <---- TX UARTtoUSB bridge
159 ; UCA0_TXD - P1.7 - J1.4 ----> RX UARTtoUSB bridge
160 RXD .equ 40h ; P1.6 = RXD
161 TXD .equ 80h ; P1.7 = TXD + FORTH Deep_RST pin
168 .IFDEF TERMINAL4WIRES
170 ; RTS output must be wired to the CTS input of UART2USB bridge
171 ; configure RTS as output high (false) to disable RX TERM during start FORTH
172 HANDSHAKOUT .equ P2OUT
174 RTS .equ 1 ; P2.0 bit position
176 BIS.B #1,&P2OUT ; P2.0 RTS as output high
178 .IFDEF TERMINAL5WIRES ; included in 4WIRES configuration
180 ; CTS input must be wired to the RTS output of UART2USB bridge
181 ; configure CTS as input low (true)
182 CTS .equ 2 ; P2.1 bit position
183 BIC.B #2,&P2DIR ; CTS input pull down resistor
185 .ENDIF ; TERMINAL5WIRES
187 .ENDIF ; TERMINAL4WIRES
192 ; ----------------------------------------------------------------------
193 ; POWER ON RESET AND INITIALIZATION : PORT3-4
194 ; ----------------------------------------------------------------------
196 ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
201 ; UCA1 RXD P4.2 - J101.8 <---- TX UARTtoUSB bridge
202 ; UCA1 TXD P4.3 - J101.6 ----> RX UARTtoUSB bridge
203 ; P4.4 - J2.9 ----> SD_CS(Card Select)
204 ; UCB1 CLK P4.5 - J1.7 ----> SD_CLK
205 ; UCB1 SIMO P4.6 - J2.15 ----> SD_SDI
206 ; UCB1 SOMI P4.7 - J2.14 <---- SD_SDO
208 MOV.B #-1,&PBOUT ; pullup resistors for all pins
209 BIS.B #-1,&PBREN ; all pins with pull resistors
212 ; UCA1 RXD P4.2 - J101.8 <---- TX UARTtoUSB bridge
213 ; UCA1 TXD P4.3 - J101.6 ----> RX UARTtoUSB bridge
214 RXD .equ 4 ; P4.2 = RXD
215 TXD .equ 8 ; P4.3 = TXD + FORTH Deep_RST pin
223 SD_CS .equ 10h ; P4.4
227 SD_SEL .equ PBSEL0 ; to configure UCB1
228 SD_REN .equ PBREN ; to configure pullup resistors
229 SD_BUS .equ 0E000h ; pins P4.5 as UCA1CLK, P4.6 as UCA1SIMO & P4.7 as UCA1SOMI
231 ; ----------------------------------------------------------------------
232 ; POWER ON RESET AND INITIALIZATION : PORT5-6
233 ; ----------------------------------------------------------------------
235 ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
241 BIS.B #0BFh,&P6REN ; all pins with pull up resistors else P6.6
242 MOV.B #0BFh,&P6OUT ; OUT high for all pins else P6.6
243 MOV.B #040h,&P6DIR ; all pins with pullup resistors else LED2 = output low
245 ; ----------------------------------------------------------------------
247 ; ----------------------------------------------------------------------
250 MOV.B #0A5h, &FRCTL0_H ; enable FRCTL0 access
251 MOV.B #10h, &FRCTL0 ; 1 waitstate @ 16 MHz
252 MOV.B #01h, &FRCTL0_H ; disable FRCTL0 access
256 MOV.B #0A5h, &FRCTL0_H ; enable FRCTL0 access
257 MOV.B #20h, &FRCTL0 ; 2 waitstate @ 24 MHz
258 MOV.B #01h, &FRCTL0_H ; disable FRCTL0 access
261 ; ----------------------------------------------------------------------
262 ; POWER ON RESET SYS config
263 ; ----------------------------------------------------------------------
265 MOV #0A500h,&SYSCFG0 ; enable write MAIN + INFO
267 ; ----------------------------------------------------------------------
268 ; POWER ON RESET AND INITIALIZATION : CLOCK SYSTEM
269 ; ----------------------------------------------------------------------
271 ; CS code for MSP430FR2355
273 ; to measure REFO frequency, output the ACLK on P1.1:
276 ; result : REFO = xx.xxx kHz
281 ; MOV #058h,&CSCTL0 ; preset DCO = measured value @ 0x180 (88)
282 ; MOV #0001h,&CSCTL1 ; Set 1MHZ DCORSEL,disable DCOFTRIM,Modulation
283 MOV #1ED1h,&CSCTL0 ; preset MOD=31, DCO = measured value @ 0x180 (209)
284 MOV #00B0h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
285 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
286 ; MOV #100Dh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Dh
287 ; fCOCLKDIV = 32768 x (13+1) = 0.459 MHz ; measured : MHz
288 ; MOV #100Eh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Eh
289 ; fCOCLKDIV = 32768 x (14+1) = 0.491 MHz ; measured : MHz
290 MOV #100Fh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Fh
291 ; fCOCLKDIV = 32768 x (15+1) = 0.524 MHz ; measured : MHz
292 ; =====================================
295 .ELSEIF FREQUENCY = 1
297 ; MOV #100h,&CSCTL0 ; preset DCO = 256
298 ; MOV #00B1h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
299 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
300 MOV #00B0h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
301 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
302 ; MOV #001Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Dh
303 ; fCOCLKDIV = 32768 x (29+1) = 0.983 MHz ; measured : 0.989MHz
304 MOV #001Eh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Eh
305 ; fCOCLKDIV = 32768 x (30+1) = 1.015 MHz ; measured : 1.013MHz
306 ; MOV #001Fh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Fh
307 ; fCOCLKDIV = 32768 x (31+1) = 1.049 MHz ; measured : 1.046MHz
308 ; =====================================
311 .ELSEIF FREQUENCY = 2
313 ; MOV #100h,&CSCTL0 ; preset DCO = 256
314 ; MOV #00B3h,&CSCTL1 ; Set 2MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
315 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
316 MOV #00B2h,&CSCTL1 ; Set 2MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
317 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
318 ; MOV #003Bh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Bh
319 ; fCOCLKDIV = 32768 x (59+1) = 1.996 MHz ; measured : MHz
320 MOV #003Ch,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Ch
321 ; fCOCLKDIV = 32768 x (60+1) = 1.998 MHz ; measured : MHz
322 ; MOV #003Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Dh
323 ; fCOCLKDIV = 32768 x (61+1) = 2.031 MHz ; measured : MHz
324 ; =====================================
327 .ELSEIF FREQUENCY = 4
329 ; MOV #100h,&CSCTL0 ; preset DCO = 256
330 ; MOV #00B5h,&CSCTL1 ; Set 4MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
331 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
332 MOV #00B4h,&CSCTL1 ; Set 4MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
333 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
334 ; MOV #0078h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=78h
335 ; fCOCLKDIV = 32768 x (120+1) = 3.965 MHz ; measured : 3.96MHz
337 MOV #0079h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=79h
338 ; fCOCLKDIV = 32768 x (121+1) = 3.997 MHz ; measured : 3.99MHz
340 ; MOV #007Ah,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=7Ah
341 ; fCOCLKDIV = 32768 x (122+1) = 4.030 MHz ; measured : 4.020MHz
342 ; =====================================
345 .ELSEIF FREQUENCY = 8
347 ; MOV #100h,&CSCTL0 ; preset DCO = 256
348 ; MOV #00B7h,&CSCTL1 ; Set 8MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
349 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
350 MOV #00B6h,&CSCTL1 ; Set 8MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
351 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
352 ; MOV #00F2h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F2h
353 ; fCOCLKDIV = 32768 x (242+1) = 7.963 MHz ; measured : 7.943MHz
354 ; MOV #00F3h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F3h
355 ; fCOCLKDIV = 32768 x (243+1) = 7.995 MHz ; measured : 7.976MHz
356 MOV #00F4h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F4h
357 ; fCOCLKDIV = 32768 x (244+1) = 8.028 MHz ; measured : 8.009MHz
359 ; MOV #00F5h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F5h
360 ; fCOCLKDIV = 32768 x (245+1) = 8.061 MHz ; measured : 8.042MHz
362 ; MOV #00F8h,&CSCTL2 ; don't work with cp2102 (by low value)
363 ; MOV #00FAh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=FAh
365 ; =====================================
368 .ELSEIF FREQUENCY = 12
370 ; MOV #100h,&CSCTL0 ; preset DCO = 256
371 ; MOV #00B9h,&CSCTL1 ; Set 12MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
372 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
373 MOV #00B8h,&CSCTL1 ; Set 12MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
374 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
375 ; MOV #016Ch,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E6h
376 ; fCOCLKDIV = 32768 x 364+1) = 12.960 MHz ; measured : 11.xxxMHz
377 ; MOV #016Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E7h
378 ; fCOCLKDIV = 32768 x 365+1) = 11.993 MHz ; measured : 11.xxxMHz
379 MOV #016Eh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E8h
380 ; fCOCLKDIV = 32768 x 366+1) = 12.025 MHz ; measured : 12.xxxMHz
381 ; MOV #016Fh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h
382 ; fCOCLKDIV = 32768 x 367+1) = 12.058 MHz ; measured : 12.xxxMHz
383 ; =====================================
386 .ELSEIF FREQUENCY = 16
388 ; MOV #100h,&CSCTL0 ; preset DCO = 256
389 ; MOV #00BBh,&CSCTL1 ; Set 16MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
390 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
391 MOV #00BAh,&CSCTL1 ; Set 16MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
392 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
393 ; MOV #01E6h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E6h
394 ; fCOCLKDIV = 32768 x 486+1) = 15.958 MHz ; measured : 15.92MHz
395 ; MOV #01E7h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E7h
396 ; fCOCLKDIV = 32768 x 487+1) = 15.991 MHz ; measured : 15.95MHz
397 MOV #01E8h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E8h
398 ; fCOCLKDIV = 32768 x 488+1) = 16.023 MHz ; measured : 15.99MHz
399 ; MOV #01E9h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h
400 ; fCOCLKDIV = 32768 x 489+1) = 16.056 MHz ; measured : 16.02MHz
401 ; =====================================
404 .ELSEIF FREQUENCY = 20
406 ; MOV #100h,&CSCTL0 ; preset DCO = 256
407 ; MOV #00BDh,&CSCTL1 ; Set 20MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
408 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
409 MOV #00BCh,&CSCTL1 ; Set 20MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
410 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
411 ; MOV #0260h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=260h
412 ; fCOCLKDIV = 32768 x 608+1) = 19.956 MHz ; measured : 19.xxxMHz
413 ; MOV #0261h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=261h
414 ; fCOCLKDIV = 32768 x 609+1) = 19.988 MHz ; measured : 19.xxxMHz
415 MOV #0262h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=262h
416 ; fCOCLKDIV = 32768 x 610+1) = 20.021 MHz ; measured : 20.xxxMHz
417 ; MOV #0263h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=263h
418 ; fCOCLKDIV = 32768 x 611+1) = 20.054 MHz ; measured : 20.xxxMHz
419 ; =====================================
422 .ELSEIF FREQUENCY = 24
424 ; MOV #100h,&CSCTL0 ; preset DCO = 256
425 ; MOV #00BFh,&CSCTL1 ; Set 24MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
426 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
427 MOV #00BEh,&CSCTL1 ; Set 24MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
428 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
429 ; MOV #02DAh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=2DAh
430 ; fCOCLKDIV = 32768 x 730+1) = 23.953 MHz ; measured : 23.xxxMHz
431 ; MOV #02DBh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=2DBh
432 ; fCOCLKDIV = 32768 x 731+1) = 23.986 MHz ; measured : 23.xxxMHz
433 MOV #02DCh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=2DCh
434 ; fCOCLKDIV = 32768 x 732+1) = 24.019 MHz ; measured : 23.xxxMHz
435 ; MOV #02DDh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=2DDh
436 ; fCOCLKDIV = 32768 x 733+1) = 24.051 MHz ; measured : 24.xxxMHz
437 ; =====================================
441 .error "bad frequency setting, only 0.5,1,2,4,8,12,16,20,24 MHz"
445 ; MOV #0000h,&CSCTL3 ; FLL select XT1, FLLREFDIV=0 (default value)
446 MOV #0000h,&CSCTL4 ; ACLOCK select XT1, MCLK & SMCLK select DCOCLKDIV
448 BIS #0010h,&CSCTL3 ; FLL select REFCLOCK
449 ; MOV #0100h,&CSCTL4 ; ACLOCK select REFO, MCLK & SMCLK select DCOCLKDIV (default value)
452 BIS &SYSRSTIV,&SAVE_SYSRSTIV; store volatile SYSRSTIV preserving a pending request for DEEP_RST
453 CMP #2,&SAVE_SYSRSTIV ; POWER ON ?
455 .word 0749h ; no RRUM #1,X --> wait anyway 250 ms because FLL lock time = 200 ms
456 ClockWaitX MOV #5209,Y ; wait 0.5s before starting after POR
458 ClockWaitY SUB #1,Y ;1
459 JNZ ClockWaitY ;2 5209x3 = 15625 cycles delay = 15.625ms @ 1MHz
460 SUB #1,X ; x 32 @ 1 MHZ = 500ms
461 JNZ ClockWaitX ; time to stabilize power source ( 500ms )
463 ;WAITFLL BIT #300h,&CSCTL7 ; wait FLL lock