TheBackShed.com

Forum Index : Microcontroller and PC projects : pico reserved pin on startup

Author

Message

Plasmamac

Guru

Joined: 31/01/2019
Location: Germany
Posts: 554

Posted: 11:34pm 27 Jul 2023

Copy link to clipboard

Print this post

forget it
Edited 2023-07-28 09:48 by Plasmamac

Plasma

stanleyella

Guru

Joined: 25/06/2022
Location: United Kingdom
Posts: 2129

Posted: 11:53pm 27 Jul 2023

Copy link to clipboard

Print this post

> option list
PicoMite MMBasic Version 5.07.06
OPTION SYSTEM SPI GP18,GP19,GP16
OPTION AUTORUN ON
OPTION LCDPANEL ILI9488, LANDSCAPE,GP15,GP14,GP13
OPTION GUI CONTROLS 30
OPTION TOUCH GP12,GP11
GUI CALIBRATE 0, 3965, 3856, -1284, -851
OPTION SDCARD GP22
OPTION AUDIO GP0,GP1, ON PWM CHANNEL 0
>
Don't use these?
I had same error message. wanted adc and ili

Plasmamac

Guru

Joined: 31/01/2019
Location: Germany
Posts: 554

Posted: 12:31am 28 Jul 2023

Copy link to clipboard

Print this post

Print
For r = 0 To 34
On error skip
SetPin r,din
If MM.ErrMsg$ ="" Then
Print "Pin";r;
EndIf
Print MM.ErrMsg$
Next

Plasma

phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2137

Posted: 01:57am 28 Jul 2023

Copy link to clipboard

Print this post

for n=1 to 40 : ? n, MM.INFO$(PIN n) : next
1 DOUT
2 OFF
3 Invalid
4 OFF
5 OFF
6 OFF
7 OFF
8 Invalid
9 OFF
10 OFF: Boot Reserved
11 OFF: Boot Reserved
12 OFF: Boot Reserved
13 Invalid
14 OFF
15 OFF: Boot Reserved
16 OFF: Boot Reserved
17 OFF: Boot Reserved
18 Invalid
19 OFF: Boot Reserved
20 OFF: Boot Reserved
21 OFF: Boot Reserved
22 OFF
23 Invalid
24 OFF: Boot Reserved
25 OFF: Boot Reserved
26 OFF
27 OFF
28 Invalid
29 OFF: Boot Reserved
30 Invalid
31 AIN: Reserved for function
32 OFF
33 Invalid
34 OFF
35 Invalid
36 Invalid
37 Invalid
38 Invalid
39 Invalid
40 Invalid
>
Edited 2023-07-28 12:00 by phil99

Plasmamac

Guru

Joined: 31/01/2019
Location: Germany
Posts: 554

Posted: 02:46am 28 Jul 2023

Copy link to clipboard

Print this post

thanks

Plasma

phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2137

Posted: 08:30am 28 Jul 2023

Copy link to clipboard

Print this post

Something for the library?

LIST
Sub FreePins
For n=0 To 29
gp$ = "GP"+Str$(n)
p = MM.Info(pinno gp$)
pu$ = MM.Info(pin p)
Print gp$, p, pu$
Next
End Sub

> freepins
GP0 1 OFF
GP1 2 OFF
GP2 4 OFF
GP3 5 OFF
GP4 6 OFF
GP5 7 OFF
GP6 9 OFF
GP7 10 OFF
GP8 11 OFF
GP9 12 OFF
GP10 14 OFF
GP11 15 OFF
GP12 16 OFF
GP13 17 OFF
GP14 19 OFF
GP15 20 OFF
GP16 21 OFF
GP17 22 OFF
GP18 24 OFF
GP19 25 OFF
GP20 26 OFF
GP21 27 OFF
GP22 29 OFF
GP23 41 DOUT
GP24 42 DIN
GP25 43 HEARTBEAT
GP26 31 OFF
GP27 32 OFF
GP28 34 OFF
GP29 44 AIN
>

Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 6798

Posted: 09:15am 28 Jul 2023

Copy link to clipboard

Print this post

Just bear in mind that the hardware pin number will only apply to an original PicoMite, whereas the GP number should be applicable to all RP2040-based systems. IMHO the use of hardware pin numbers should be discouraged.
Edited 2023-07-28 19:16 by Mixtel90

Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs

Volhout
Guru

Joined: 05/03/2018
Location: Netherlands
Posts: 4247

Posted: 09:17am 28 Jul 2023

Copy link to clipboard

Print this post

hi phil,

Good idea about a library function. But think about variable useage.
If your library uses "n" then your program cannot use "n" as a different variable (float/string).

So invent variable names that are not incidentally used. Something like
"Internal_Lib_variable_n%"

Regards,

Volhout

PicomiteVGA PETSCII ROBOTS

Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 6798

Posted: 10:36am 28 Jul 2023

Copy link to clipboard

Print this post

Even better, make all library routines use local or declared variables unless they *have* to have a shared global, in which case it should be related to the name of the routine. e.g.

SUB swapvars(var_a, var_b)
local var_c
var_c = var_a
var_a = var_b
var_b = var_c
g_swapvars_done = 1
END SUB

This is stupidly simplistic, but you get the idea? Also use STATIC variables where it's only a counter or something that nothing else will need access to. Try to sandbox every library routine as far as possible.

Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs

phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2137

Posted: 12:38pm 28 Jul 2023

Copy link to clipboard

Print this post

OK, Mk2

Sub FreePins
local n%, p%, gp$
For n%=0 To 29
gp$ = "GP"+Str$(n%)
p% = MM.Info(pinno gp$)
Print gp$, p%, MM.Info$(pin p%)
Next
End Sub

stanleyella

Guru

Joined: 25/06/2022
Location: United Kingdom
Posts: 2129

Posted: 01:39pm 28 Jul 2023

Copy link to clipboard

Print this post

That's useful Phil99. cheers

Print this page

To reply to this topic, you need to log in.