Problem to Comunicate with I2C Bs2P40 I2C to MAX6955 (Dispa...
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Posts: 46,084
What Stamp pins are you using for SDA and SCL? If you're using pins on the
AUX group you must put in an AUXIO before your I2CIN or I2COUT statements?.
I just looked at the MAX6955 spec sheet and it shows pin 4 as SDA and pin 5
as SCL. Also remember that on the BS2p, you can only use pins 0 & 1 or 8 & 9
(on either the MAIN or AUXIO groups) for I2CIN and I2COUT. Please consult
the manual or help file.
-- Jon Williams
-- Parallax
In a message dated 2/21/2003 5:34:33 PM Central Standard Time,
dtrujillo_riese@c... writes:
> I have a BS2p40 conecting with MAX6955 into pin 6 (SDA) and Pin7 (SCL) and
> the MAX6955 have adress 00 (%11000000 (write) or %11000001 (read)). then,
> in fact, i put AD0 and AD1 to gnd.... I don't know, why don't my Bs2p40
> conect to MAX6955? When I try to read, in the variable, you can see
> %11111111 and I sure that my parallax isn't write the MAX6955, because I
> tried to put MAX6955 in Dysplay TEST.. ANd I don't know, What is the
> Problem?
>
> THe MAX6955 is the 2-wire, 2,7V to 5.5V LED DISPLAY DRIVER with I/O
> Expander and Key Scan.. This is the new chip to MAXIM...
> Anyone, help me?
[noparse][[/noparse]Non-text portions of this message have been removed]
AUX group you must put in an AUXIO before your I2CIN or I2COUT statements?.
I just looked at the MAX6955 spec sheet and it shows pin 4 as SDA and pin 5
as SCL. Also remember that on the BS2p, you can only use pins 0 & 1 or 8 & 9
(on either the MAIN or AUXIO groups) for I2CIN and I2COUT. Please consult
the manual or help file.
-- Jon Williams
-- Parallax
In a message dated 2/21/2003 5:34:33 PM Central Standard Time,
dtrujillo_riese@c... writes:
> I have a BS2p40 conecting with MAX6955 into pin 6 (SDA) and Pin7 (SCL) and
> the MAX6955 have adress 00 (%11000000 (write) or %11000001 (read)). then,
> in fact, i put AD0 and AD1 to gnd.... I don't know, why don't my Bs2p40
> conect to MAX6955? When I try to read, in the variable, you can see
> %11111111 and I sure that my parallax isn't write the MAX6955, because I
> tried to put MAX6955 in Dysplay TEST.. ANd I don't know, What is the
> Problem?
>
> THe MAX6955 is the 2-wire, 2,7V to 5.5V LED DISPLAY DRIVER with I/O
> Expander and Key Scan.. This is the new chip to MAXIM...
> Anyone, help me?
[noparse][[/noparse]Non-text portions of this message have been removed]
Comments
us that might assist you.
-- Jon Williams
-- Parallax
In a message dated 2/21/2003 5:46:27 PM Central Standard Time,
dtrujillo_riese@c... writes:
> I have a BS2p40 conecting with MAX6955 into pin 6 (SDA) and Pin7 (SCL) and
> the MAX6955 have adress 00 (%11000000 (write) or %11000001 (read)). then,
> in fact, i put AD0 and AD1 to gnd.... I don't know, why don't my Bs2p40
> conect to MAX6955? When I try to read, in the variable, you can see
> %11111111 and I sure that my parallax isn't write the MAX6955, because I
> tried to put MAX6955 in Dysplay TEST.. ANd I don't know, What is the
> Problem?
>
> THe MAX6955 is the 2-wire, 2,7V to 5.5V LED DISPLAY DRIVER with I/O
> Expander and Key Scan.. This is the new chip to MAXIM...
> Anyone, help me?
>
> I appreciate your prompt response
>
> Best Regards
>
> Eng. Damian Trujillo G
> Venezuela, Caracas
> JAHEL S.A.
[noparse][[/noparse]Non-text portions of this message have been removed]
I was using pin 6 (SDA)and 7 (SDL), I had a misstake with this pins.......
I try to cahnge to pin 8 and 9.....
I appreciate your email response
Best Regards
Eng. damian Trujillo
Venezuela, Caracas
Mensaje Original
De: jonwms [noparse]/noparse][url=http://forums.parallaxinc.com/group/basicstamps/post?postID=-2ydlyNoB2z9LrK5_wAaKtQqxdgmFxLAKEeYvFo4GHYGte2K8oPSFpbyxxWHmMHLARETY1V_K7H6]jonwms@a...[/url
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Cc:
Asunto: Re: [noparse][[/noparse]basicstamps] Problem to Comunicate with I2C Bs2P40 I2C to
MAX6955 (Dispa...
Fecha: 21/02/2003 19:44:02
Mensaje:
What Stamp pins are you using for SDA and SCL? If you're using pins
on the
AUX group you must put in an AUXIO before your I2CIN or I2COUT statements?.
I just looked at the MAX6955 spec sheet and it shows pin 4 as SDA and pin 5
as SCL. Also remember that on the BS2p, you can only use pins 0 & 1 or 8 &
9
(on either the MAIN or AUXIO groups) for I2CIN and I2COUT. Please consult
the manual or help file.
-- Jon Williams
-- Parallax
In a message dated 2/21/2003 5:34:33 PM Central Standard Time,
dtrujillo_riese@c... writes:
> I have a BS2p40 conecting with MAX6955 into pin 6 (SDA) and Pin7 (SCL) and
> the MAX6955 have adress 00 (%11000000 (write) or %11000001 (read)). then,
> in fact, i put AD0 and AD1 to gnd.... I don't know, why don't my Bs2p40
> conect to MAX6955? When I try to read, in the variable, you can see
> %11111111 and I sure that my parallax isn't write the MAX6955, because I
> tried to put MAX6955 in Dysplay TEST.. ANd I don't know, What is the
> Problem?
>
> THe MAX6955 is the 2-wire, 2,7V to 5.5V LED DISPLAY DRIVER with I/O
> Expander and Key Scan.. This is the new chip to MAXIM...
> Anyone, help me?
[noparse][[/noparse]Non-text portions of this message have been removed]
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