1 ; -*- coding: utf-8 -*-
4 ; ===================================================================================
5 ; in case of 3.3V powered by UARTtoUSB bridge, open J13 straps {RST,TST,V+,5V} BEFORE
6 ; ===================================================================================
8 ; J101 Target J101 eZ-FET UARTtoUSB
13 ; P1.5 UCA0_RX 8 o--o 7 <------------ TX UARTtoUSB
14 ; P1.4 UCA0_TX 6 o--o 5 <---------+-> RX UARTtoUSB
15 ; SBWTDIO/RST 4 o--o 3 | _
16 ; SBWTCK/TST 2 o--o 1 +--4k7---o o-- GND
19 ; VCC - ----> VCC SD_CardAdapter
20 ; GND - <---> GND SD_CardAdapter
21 ; P2.4 - UCA1 CLK J2 ----> CLK SD_CardAdapter (SCK)
22 ; P2.6 - UCA1 TXD/SIMO J1 ----> SDI SD_CardAdapter (MOSI)
23 ; P2.5 - UCA1 RXD/SOMI J1 <---- SDO SD_CardAdapter (MISO)
24 ; P1.6 - J4 ----> CS SD_CardAdapter (Card Select)
25 ; P1.7 - J4 <---- CD SD_CardAdapter (Card Detect)
27 ; ======================================================================
28 ; LP_MSP430FR2476 board
29 ; ======================================================================
33 ; P1.6/UCA0CLK/TA1CLK/TDI/TCLK/A6
34 ; P2.5/UCA1RXD/UCA1SOMI/CAP1.2
35 ; P2.6/UCA1TXD/UCA1SIMO/CAP1.3
36 ; P2.2/SYNC/ACLK/COMP0.1
37 ; P5.4/UCB1STE/TA3CLK/A11
38 ; P3.5/UCB1CLK/TB0TRG/CAP3.1
39 ; P4.5/UCB0SOMI/UCB0SCL/TA3.2
40 ; P1.3/UCB0SOMI/UCB0SCL/MCLK/A3
41 ; P1.2/UCB0SIMO/UCB0SDA/TA0.2/A2/VEREF-
47 ; P1.7/UCA0STE/SMCLK/TDO/A7
48 ; P4.3/UCB1SOMI/UCB1SCL/TB0.5/A8
49 ; P4.4/UCB1SIMO/UCB1SDA/TB0.6/A9
50 ; P5.3/UCB1CLK/TA3.0/A10
51 ; P1.0/UCB0STE/TA0CLK/A0/VEREF+ -<J7>- LED1
52 ; P1.1/UCB0CLK/TA0.1/COMP0.0/A1 --- TEMPERATURE SENSOR ---<J9>--- 3V3
57 ; P5.2/UCA0TXD/UCA0SIMO/TB0.4
58 ; P5.1/UCA0RXD/UCA0SOMI/TB0.3 -<J8>- LED2Red
59 ; P5.0/UCA0CLK/TB0.2 -<J8>- LED2Green
60 ; P4.7/UCA0STE/TB0.1 -<J8>- LED2Blue
70 ; P4.6/UCB0SIMO/UCB0SDA/TA3.1
74 ; P3.2/UCB1SIMO/UCB1SDA/CAP3.2
75 ; P3.6/UCB1SOMI/UCB1SCL/CAP3.3
81 ; P4.0/TA3.1/CAP2.1 - S1
82 ; P2.3/TA2.0/CAP0.2 - S2
94 ; ----------------------------------------------------------------------
95 ; POWER ON RESET AND INITIALIZATION : I/O
96 ; ----------------------------------------------------------------------
97 ; ----------------------------------------------------------------------
98 ; POWER ON RESET AND INITIALIZATION : PORT1/2
99 ; ----------------------------------------------------------------------
101 ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
111 ; PORTx default wanted state : pins as input with pullup resistor
113 BIS #-1,&PAREN ; all pins with pull up/down resistors
114 MOV #0FFFEh,&PAOUT ; all pins with pull up resistors else P1.0 (LED2)
117 ; P1.4 UCA0-TXD --> USB2UART RXD
118 ; P1.5 UCA0-RXD <-- USB2UART TXD
122 TXD .equ 10h ; P1.4 = TX
123 RXD .equ 20h ; P1.5 = RX
127 CD_SD .equ 080h ; P1.7 as Card Detect
130 CS_SD .equ 040h ; P1.6 as Card Select
135 BUS_SD .equ 7000h ; pins P2.4 as UCA1CLK, P2.6 as UCA1SIMO & P2.5 as UCA1SOMI
136 SD_SEL .equ PASEL0 ; to configure UCA1
137 SD_REN .equ PAREN ; to configure pullup resistors
140 ; P2.3/TA2.0/CAP0.2 - S2
144 ; ----------------------------------------------------------------------
145 ; POWER ON RESET AND INITIALIZATION : PORT3/4
146 ; ----------------------------------------------------------------------
147 ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
149 BIS #-1,&PBREN ; all pins 1 with pull up/down resistors
150 MOV #07FFFh,&PBOUT ; all pins with pull up resistors else P4.7 (LED2B)
158 BUS_TERM .equ 0Ch ; P3.2=SDA P3.3=SCL
165 SW1 .equ 1 ; P4.0 = S1
167 IO_WIPE .equ 1 ; P4.0 = S1 = FORTH Deep_RST pin
172 ; ----------------------------------------------------------------------
173 ; POWER ON RESET AND INITIALIZATION : PORT5/6
174 ; ----------------------------------------------------------------------
175 ; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
179 ; LED2R - J8 - P5.1 red LED1
188 HANDSHAKOUT .equ P6OUT
193 ; BIS #00003h,&PCDIR ; all pins 0 as input else P5.0 (LED2G) P5.1 (LED2R)
194 ; MOV #0FFFCh,&PCOUT ; all pins high else P5.0 (LED2G) P5.1 (LED2R)
195 ; BIS #0FFFCh,&PCREN ; all pins with pull resistors else P5.0 (LED2G) P5.1 (LED2R)
197 BIS #-1,&PCREN ; all pins with pull up/down resistors
198 MOV #0FFFCh,&PCOUT ; all pins with pull up resistors else P5.0 (LED2G) P5.1 (LED2R)
200 .IFDEF TERMINAL4WIRES
201 ; RTS output is wired to the CTS input of UART2USB bridge
202 ; configure RTS as output high to disable RX TERM during start FORTH
203 BIS.B #RTS,&P6DIR ; RTS as output high
204 .IFDEF TERMINAL5WIRES
205 ; CTS input must be wired to the RTS output of UART2USB bridge
206 ; configure CTS as input low (true) to avoid lock when CTS is not wired
207 BIC.B #CTS,&P6OUT ; CTS input pulled down
208 .ENDIF ; TERMINAL5WIRES
209 .ENDIF ; TERMINAL4WIRES
211 ; ----------------------------------------------------------------------
213 ; ----------------------------------------------------------------------
216 MOV.B #0A5h,&FRCTL0_H ; enable FRCTL0 access
217 MOV.B #10h,&FRCTL0 ; 1 waitstate @ 16 MHz
218 MOV.B #01h,&FRCTL0_H ; disable FRCTL0 access
221 ; ----------------------------------------------------------------------
222 ; POWER ON RESET SYS config
223 ; ----------------------------------------------------------------------
226 ; BIC #1,&SYSCFG0 ; enable write program in FRAM
227 MOV #0A500h,&SYSCFG0 ; enable write MAIN and INFO
229 ; ----------------------------------------------------------------------
230 ; POWER ON RESET AND INITIALIZATION : CLOCK SYSTEM
231 ; ----------------------------------------------------------------------
233 ; CS code for MSP430FR2476
235 ; to measure REFO frequency, output ACLK on P2.2:
238 ; result : REFO = xx.xx kHz
242 ; MOV #058h,&CSCTL0 ; preset DCO = measured value @ 0x180 (88)
243 ; MOV #0001h,&CSCTL1 ; Set 1MHZ DCORSEL,disable DCOFTRIM,Modulation
244 MOV #1ED1h,&CSCTL0 ; preset MOD=31, DCO = measured value @ 0x180 (209)
245 MOV #00B0h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
246 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
247 ; MOV #100Dh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Dh
248 ; fCOCLKDIV = 32768 x (13+1) = 0.459 MHz ; measured : MHz
249 ; MOV #100Eh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Eh
250 ; fCOCLKDIV = 32768 x (14+1) = 0.491 MHz ; measured : MHz
251 MOV #100Fh,&CSCTL2 ; Set FLLD=1 (DCOCLKCDIV=DCO/2),set FLLN=0Fh
252 ; fCOCLKDIV = 32768 x (15+1) = 0.524 MHz ; measured : MHz
253 ; =====================================
256 .ELSEIF FREQUENCY = 1
258 ; MOV #100h,&CSCTL0 ; preset DCO = 256
259 ; MOV #00B1h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
260 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
261 MOV #00B0h,&CSCTL1 ; Set 1MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
262 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
263 ; MOV #001Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Dh
264 ; fCOCLKDIV = 32768 x (29+1) = 0.983 MHz ; measured : 0.989MHz
265 MOV #001Eh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Eh
266 ; fCOCLKDIV = 32768 x (30+1) = 1.015 MHz ; measured : 1.013MHz
267 ; MOV #001Fh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1Fh
268 ; fCOCLKDIV = 32768 x (31+1) = 1.049 MHz ; measured : 1.046MHz
269 ; =====================================
272 .ELSEIF FREQUENCY = 2
274 ; MOV #100h,&CSCTL0 ; preset DCO = 256
275 ; MOV #00B3h,&CSCTL1 ; Set 2MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
276 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
277 MOV #00B2h,&CSCTL1 ; Set 2MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
278 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
279 ; MOV #003Bh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Bh
280 ; fCOCLKDIV = 32768 x (59+1) = 1.966 MHz ; measured : MHz
281 MOV #003Ch,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Ch
282 ; fCOCLKDIV = 32768 x (60+1) = 1.998 MHz ; measured : MHz
283 ; MOV #003Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=3Dh
284 ; fCOCLKDIV = 32768 x (61+1) = 2.031 MHz ; measured : MHz
285 ; =====================================
288 .ELSEIF FREQUENCY = 4
290 ; MOV #100h,&CSCTL0 ; preset DCO = 256
291 ; MOV #00B5h,&CSCTL1 ; Set 4MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
292 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
293 MOV #00B4h,&CSCTL1 ; Set 4MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
294 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
295 ; MOV #0078h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=78h
296 ; fCOCLKDIV = 32768 x (120+1) = 3.965 MHz ; measured : 3.96MHz
298 MOV #0079h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=79h
299 ; fCOCLKDIV = 32768 x (121+1) = 3.997 MHz ; measured : 3.99MHz
301 ; MOV #007Ah,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=7Ah
302 ; fCOCLKDIV = 32768 x (122+1) = 4.030 MHz ; measured : 4.020MHz
303 ; =====================================
306 .ELSEIF FREQUENCY = 8
308 ; MOV #100h,&CSCTL0 ; preset DCO = 256
309 ; MOV #00B7h,&CSCTL1 ; Set 8MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
310 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
311 MOV #00B6h,&CSCTL1 ; Set 8MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
312 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
313 ; MOV #00F2h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F2h
314 ; fCOCLKDIV = 32768 x (242+1) = 7.963 MHz ; measured : 7.943MHz
315 ; MOV #00F3h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F3h
316 ; fCOCLKDIV = 32768 x (243+1) = 7.995 MHz ; measured : 7.976MHz
317 MOV #00F4h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F4h
318 ; fCOCLKDIV = 32768 x (244+1) = 8.028 MHz ; measured : 8.009MHz
320 ; MOV #00F5h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=F5h
321 ; fCOCLKDIV = 32768 x (245+1) = 8.061 MHz ; measured : 8.042MHz
323 ; MOV #00F8h,&CSCTL2 ; don't work with cp2102 (by low value)
324 ; MOV #00FAh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=FAh
326 ; =====================================
329 .ELSEIF FREQUENCY = 12
331 ; MOV #100h,&CSCTL0 ; preset DCO = 256
332 ; MOV #00B9h,&CSCTL1 ; Set 12MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
333 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
334 MOV #00B8h,&CSCTL1 ; Set 12MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
335 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
336 ; MOV #016Ch,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E6h
337 ; fCOCLKDIV = 32768 x 364+1) = 12.960 MHz ; measured : 11.xxxMHz
338 ; MOV #016Dh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E7h
339 ; fCOCLKDIV = 32768 x 365+1) = 11.993 MHz ; measured : 11.xxxMHz
340 MOV #016Eh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E8h
341 ; fCOCLKDIV = 32768 x 366+1) = 12.025 MHz ; measured : 12.xxxMHz
342 ; MOV #016Fh,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h
343 ; fCOCLKDIV = 32768 x 367+1) = 12.058 MHz ; measured : 12.xxxMHz
344 ; =====================================
347 .ELSEIF FREQUENCY = 16
349 ; MOV #100h,&CSCTL0 ; preset DCO = 256
350 ; MOV #00BBh,&CSCTL1 ; Set 16MHZ DCORSEL,enable DCOFTRIM=3h ,disable Modulation
351 MOV #1EFFh,&CSCTL0 ; preset MOD=31, DCO=255
352 MOV #00BAh,&CSCTL1 ; Set 16MHZ DCORSEL,enable DCOFTRIM=3h ,enable Modulation to reduce EMI
353 ; ===================================== ; fCOCLKDIV = REFO x (FLLN+1)
354 ; MOV #01E6h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E6h
355 ; fCOCLKDIV = 32768 x 486+1) = 15.958 MHz ; measured : 15.92MHz
356 ; MOV #01E7h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E7h
357 ; fCOCLKDIV = 32768 x 487+1) = 15.991 MHz ; measured : 15.95MHz
358 MOV #01E8h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E8h
359 ; fCOCLKDIV = 32768 x 488+1) = 16.023 MHz ; measured : 15.99MHz
360 ; MOV #01E9h,&CSCTL2 ; Set FLLD=0 (DCOCLKCDIV=DCO),set FLLN=1E9h
361 ; fCOCLKDIV = 32768 x 489+1) = 16.056 MHz ; measured : 16.02MHz
362 ; =====================================
366 .error "bad frequency setting, only 0.5,1,2,4,8,12,16 MHz"
371 ; MOV #0000h,&CSCTL3 ; FLL select XT1, FLLREFDIV=0 (default value)
372 MOV #0000h,&CSCTL4 ; ACLOCK select XT1, MCLK & SMCLK select DCOCLKDIV
374 BIS.B #03,&P2SEL0 ; P2.0 as XOUT, P2.1 as XIN
377 BIS #0010h,&CSCTL3 ; FLL select REFCLOCK
378 ; MOV #0100h,&CSCTL4 ; ACLOCK select REFO, MCLK & SMCLK select DCOCLKDIV (default value)
382 BIS &SYSRSTIV,&SAVE_SYSRSTIV; store volatile SYSRSTIV preserving a pending request for DEEP_RST
383 ; MOV &SAVE_SYSRSTIV,TOS ;
384 ; CMP #2,TOS ; POWER ON ?
385 ; JZ ClockWaitX ; yes
386 ; RRUM #1,X ; wait only 250 ms
387 ClockWaitX MOV #5209,Y ; wait 0.5s before starting after POR
388 ; ...because FLL lock time = 280 ms
389 ClockWaitY SUB #1,Y ;1
390 JNZ ClockWaitY ;2 5209x3 = 15625 cycles delay = 15.625ms @ 1MHz
391 SUB #1,X ; x 32 @ 1 MHZ = 500ms
392 JNZ ClockWaitX ; time to stabilize power source ( 500ms )
394 ;WAITFLL BIT #300h,&CSCTL7 ; wait FLL lock