RCM6700 6 serial ports and fat

Hi all

I have a problem using an RCM6700 with the 6 serial ports enabled and the fat filesystem. In datasheets i saw that rcm uses the serial port B
pins to drive the serial flash (PD4,PD5,PD6). In IOconfig i have change the serial portB to pins PC4,PC5. In this configuration if the serial port B is closed, the fat works fine but if is opened some times the fat works ans some times blocks (is in blocking mode) randomly.
There is another define that i missed? I will test to open the portB only when i need it (when i use it i dont need the fat) but is a safe method ?

Below is all the definitions

#define AINBUFSIZE 31
#define AOUTBUFSIZE 31
#define SERA_TXPORT PCDR
#define ADRIVE_TXD 6
#define SERA_RXPORT PCDR
#define ADRIVE_RXD 7
#define BINBUFSIZE 31
#define BOUTBUFSIZE 31
#define SERB_TXPORT PCDR
#define BDRIVE_TXD 4
#define SERB_RXPORT PCDR
#define BDRIVE_RXD 5
#define CINBUFSIZE 31
#define COUTBUFSIZE 31
#define SERC_TXPORT PCDR
#define CDRIVE_TXD 2
#define SERC_RXPORT PCDR
#define CDRIVE_RXD 3
#define DINBUFSIZE 31
#define DOUTBUFSIZE 31
#define SERD_TXPORT PCDR
#define DDRIVE_TXD 0
#define SERD_RXPORT PCDR
#define DDRIVE_RXD 1
#define EINBUFSIZE 31
#define EOUTBUFSIZE 31
#define SERE_TXPORT PEDR
#define EDRIVE_TXD 6
#define SERE_RXPORT PEDR
#define EDRIVE_RXD 7
#define FINBUFSIZE 31
#define FOUTBUFSIZE 31
#define SERF_TXPORT PDDR
#define FDRIVE_TXD 2
#define SERF_RXPORT PEDR
#define FDRIVE_RXD 3

and the settings
serAopen(9600L);
WrPortI(SACR,&SACRShadow, 0x01);
serBopen(9600L);
WrPortI(SBCR,&SBCRShadow, 0x01);
serCopen(2400L);
WrPortI(SCCR,&SCCRShadow, 0x01);
serDopen(2400L);
WrPortI(SDCR,&SDCRShadow, 0x01);
serEopen(2400L);
WrPortI(SECR,&SECRShadow, 0x21);
serFopen(2400L);
WrPortI(SFCR,&SFCRShadow, 0x11);

WrPortI(PBDDR,&PBDDRShadow,0xDC); // Port B Input and output Pins
WrPortI(PCFR,&PCFRShadow,0x55); // Serial Port C
WrPortI(PDALR,&PDALRShadow,0x30); // Serial Port F
WrPortI(PDDDR,&PDDDRShadow,0x64); // Serial Port F
WrPortI(PDFR,&PDFRShadow,0x04); // Serial Port F
WrPortI(PEAHR,&PEAHRShadow,0x30); // Serial Port E
WrPortI(PEDDR,&PEDDRShadow,0x40); // Serial Port E
WrPortI(PEFR,&PEFRShadow,0x40); // Serial Port E
WrPortI(SACR,&SACRShadow,0x01); // Serial Port A
WrPortI(SBCR,&SBCRShadow,0x01); // Serial Port B
WrPortI(SCCR,&SCCRShadow,0x01); // Serial Port C
WrPortI(SDCR,&SDCRShadow,0x01); // Serial Port D
WrPortI(SECR,&SECRShadow,0x21); // Serial Port E
WrPortI(SFCR,&SFCRShadow,0x11); // Serial Port F

Thank's

Akis

Start a New Thread

From my experience of trying to utilise all 6 ports and the serial flash my
flash performance was erratic, in the end I left port B dedicated to fat
storage in my application.

Phil

On 26 July 2012 01:01, akisppoli wrote:

> **
> Hi all
>
> I have a problem using an RCM6700 with the 6 serial ports enabled and the
> fat filesystem. In datasheets i saw that rcm uses the serial port B
> pins to drive the serial flash (PD4,PD5,PD6). In IOconfig i have change
> the serial portB to pins PC4,PC5. In this configuration if the serial port
> B is closed, the fat works fine but if is opened some times the fat works
> ans some times blocks (is in blocking mode) randomly.
> There is another define that i missed? I will test to open the portB only
> when i need it (when i use it i dont need the fat) but is a safe method ?
>
> Below is all the definitions
>
> #define AINBUFSIZE 31
> #define AOUTBUFSIZE 31
> #define SERA_TXPORT PCDR
> #define ADRIVE_TXD 6
> #define SERA_RXPORT PCDR
> #define ADRIVE_RXD 7
> #define BINBUFSIZE 31
> #define BOUTBUFSIZE 31
> #define SERB_TXPORT PCDR
> #define BDRIVE_TXD 4
> #define SERB_RXPORT PCDR
> #define BDRIVE_RXD 5
> #define CINBUFSIZE 31
> #define COUTBUFSIZE 31
> #define SERC_TXPORT PCDR
> #define CDRIVE_TXD 2
> #define SERC_RXPORT PCDR
> #define CDRIVE_RXD 3
> #define DINBUFSIZE 31
> #define DOUTBUFSIZE 31
> #define SERD_TXPORT PCDR
> #define DDRIVE_TXD 0
> #define SERD_RXPORT PCDR
> #define DDRIVE_RXD 1
> #define EINBUFSIZE 31
> #define EOUTBUFSIZE 31
> #define SERE_TXPORT PEDR
> #define EDRIVE_TXD 6
> #define SERE_RXPORT PEDR
> #define EDRIVE_RXD 7
> #define FINBUFSIZE 31
> #define FOUTBUFSIZE 31
> #define SERF_TXPORT PDDR
> #define FDRIVE_TXD 2
> #define SERF_RXPORT PEDR
> #define FDRIVE_RXD 3
>
> and the settings
>
> serAopen(9600L);
> WrPortI(SACR,&SACRShadow, 0x01);
> serBopen(9600L);
> WrPortI(SBCR,&SBCRShadow, 0x01);
> serCopen(2400L);
> WrPortI(SCCR,&SCCRShadow, 0x01);
> serDopen(2400L);
> WrPortI(SDCR,&SDCRShadow, 0x01);
> serEopen(2400L);
> WrPortI(SECR,&SECRShadow, 0x21);
> serFopen(2400L);
> WrPortI(SFCR,&SFCRShadow, 0x11);
>
> WrPortI(PBDDR,&PBDDRShadow,0xDC); // Port B Input and output Pins
> WrPortI(PCFR,&PCFRShadow,0x55); // Serial Port C
> WrPortI(PDALR,&PDALRShadow,0x30); // Serial Port F
> WrPortI(PDDDR,&PDDDRShadow,0x64); // Serial Port F
> WrPortI(PDFR,&PDFRShadow,0x04); // Serial Port F
> WrPortI(PEAHR,&PEAHRShadow,0x30); // Serial Port E
> WrPortI(PEDDR,&PEDDRShadow,0x40); // Serial Port E
> WrPortI(PEFR,&PEFRShadow,0x40); // Serial Port E
> WrPortI(SACR,&SACRShadow,0x01); // Serial Port A
> WrPortI(SBCR,&SBCRShadow,0x01); // Serial Port B
> WrPortI(SCCR,&SCCRShadow,0x01); // Serial Port C
> WrPortI(SDCR,&SDCRShadow,0x01); // Serial Port D
> WrPortI(SECR,&SECRShadow,0x21); // Serial Port E
> WrPortI(SFCR,&SFCRShadow,0x11); // Serial Port F
>
> Thank's
>
> Akis
>
>
> Start a New Thread

You can't use the serial port as a serial port and for accessing the serial flash at the same time. Pick one feature or the other.

--- In r..., "akisppoli" wrote:
>
> Hi all
>
> I have a problem using an RCM6700 with the 6 serial ports enabled and the fat filesystem. In datasheets i saw that rcm uses the serial port B
> pins to drive the serial flash (PD4,PD5,PD6). In IOconfig i have change the serial portB to pins PC4,PC5. In this configuration if the serial port B is closed, the fat works fine but if is opened some times the fat works ans some times blocks (is in blocking mode) randomly.
> There is another define that i missed? I will test to open the portB only when i need it (when i use it i dont need the fat) but is a safe method ?
>
> Below is all the definitions
>
> #define AINBUFSIZE 31
> #define AOUTBUFSIZE 31
> #define SERA_TXPORT PCDR
> #define ADRIVE_TXD 6
> #define SERA_RXPORT PCDR
> #define ADRIVE_RXD 7
> #define BINBUFSIZE 31
> #define BOUTBUFSIZE 31
> #define SERB_TXPORT PCDR
> #define BDRIVE_TXD 4
> #define SERB_RXPORT PCDR
> #define BDRIVE_RXD 5
> #define CINBUFSIZE 31
> #define COUTBUFSIZE 31
> #define SERC_TXPORT PCDR
> #define CDRIVE_TXD 2
> #define SERC_RXPORT PCDR
> #define CDRIVE_RXD 3
> #define DINBUFSIZE 31
> #define DOUTBUFSIZE 31
> #define SERD_TXPORT PCDR
> #define DDRIVE_TXD 0
> #define SERD_RXPORT PCDR
> #define DDRIVE_RXD 1
> #define EINBUFSIZE 31
> #define EOUTBUFSIZE 31
> #define SERE_TXPORT PEDR
> #define EDRIVE_TXD 6
> #define SERE_RXPORT PEDR
> #define EDRIVE_RXD 7
> #define FINBUFSIZE 31
> #define FOUTBUFSIZE 31
> #define SERF_TXPORT PDDR
> #define FDRIVE_TXD 2
> #define SERF_RXPORT PEDR
> #define FDRIVE_RXD 3
>
> and the settings
> serAopen(9600L);
> WrPortI(SACR,&SACRShadow, 0x01);
> serBopen(9600L);
> WrPortI(SBCR,&SBCRShadow, 0x01);
> serCopen(2400L);
> WrPortI(SCCR,&SCCRShadow, 0x01);
> serDopen(2400L);
> WrPortI(SDCR,&SDCRShadow, 0x01);
> serEopen(2400L);
> WrPortI(SECR,&SECRShadow, 0x21);
> serFopen(2400L);
> WrPortI(SFCR,&SFCRShadow, 0x11);
>
> WrPortI(PBDDR,&PBDDRShadow,0xDC); // Port B Input and output Pins
> WrPortI(PCFR,&PCFRShadow,0x55); // Serial Port C
> WrPortI(PDALR,&PDALRShadow,0x30); // Serial Port F
> WrPortI(PDDDR,&PDDDRShadow,0x64); // Serial Port F
> WrPortI(PDFR,&PDFRShadow,0x04); // Serial Port F
> WrPortI(PEAHR,&PEAHRShadow,0x30); // Serial Port E
> WrPortI(PEDDR,&PEDDRShadow,0x40); // Serial Port E
> WrPortI(PEFR,&PEFRShadow,0x40); // Serial Port E
> WrPortI(SACR,&SACRShadow,0x01); // Serial Port A
> WrPortI(SBCR,&SBCRShadow,0x01); // Serial Port B
> WrPortI(SCCR,&SCCRShadow,0x01); // Serial Port C
> WrPortI(SDCR,&SDCRShadow,0x01); // Serial Port D
> WrPortI(SECR,&SECRShadow,0x21); // Serial Port E
> WrPortI(SFCR,&SFCRShadow,0x11); // Serial Port F
>
> Thank's
>
> Akis
>

Start a New Thread

I'm a little concerned about all of the WrPortI() commands. The whole point of the serial port macro definitions is for the serial library to do that work for you when you call serXopen().

Instead of actually writing the registers, change your code to print something out if the shadow register doesn't match what you're trying to set it to. Then, look up the register definition and see why the library has set the register differently than how you're trying to set it.

Overwriting an entire register like that is only a good idea if you know exactly what you're doing and why you're doing it. If you only need to change some of the bits, then use the shadow register to keep the bits you aren't changing, or use BitWrPortI() to limit your changes to certain bits.

-Tom
On Jul 25, 2012, at 5:01 PM, akisppoli wrote:

> Hi all
>
> I have a problem using an RCM6700 with the 6 serial ports enabled and the fat filesystem. In datasheets i saw that rcm uses the serial port B
> pins to drive the serial flash (PD4,PD5,PD6). In IOconfig i have change the serial portB to pins PC4,PC5. In this configuration if the serial port B is closed, the fat works fine but if is opened some times the fat works ans some times blocks (is in blocking mode) randomly.
> There is another define that i missed? I will test to open the portB only when i need it (when i use it i dont need the fat) but is a safe method ?
>
> Below is all the definitions
>
> #define AINBUFSIZE 31
> #define AOUTBUFSIZE 31
> #define SERA_TXPORT PCDR
> #define ADRIVE_TXD 6
> #define SERA_RXPORT PCDR
> #define ADRIVE_RXD 7
> #define BINBUFSIZE 31
> #define BOUTBUFSIZE 31
> #define SERB_TXPORT PCDR
> #define BDRIVE_TXD 4
> #define SERB_RXPORT PCDR
> #define BDRIVE_RXD 5
> #define CINBUFSIZE 31
> #define COUTBUFSIZE 31
> #define SERC_TXPORT PCDR
> #define CDRIVE_TXD 2
> #define SERC_RXPORT PCDR
> #define CDRIVE_RXD 3
> #define DINBUFSIZE 31
> #define DOUTBUFSIZE 31
> #define SERD_TXPORT PCDR
> #define DDRIVE_TXD 0
> #define SERD_RXPORT PCDR
> #define DDRIVE_RXD 1
> #define EINBUFSIZE 31
> #define EOUTBUFSIZE 31
> #define SERE_TXPORT PEDR
> #define EDRIVE_TXD 6
> #define SERE_RXPORT PEDR
> #define EDRIVE_RXD 7
> #define FINBUFSIZE 31
> #define FOUTBUFSIZE 31
> #define SERF_TXPORT PDDR
> #define FDRIVE_TXD 2
> #define SERF_RXPORT PEDR
> #define FDRIVE_RXD 3
>
> and the settings
>
> serAopen(9600L);
> WrPortI(SACR,&SACRShadow, 0x01);
> serBopen(9600L);
> WrPortI(SBCR,&SBCRShadow, 0x01);
> serCopen(2400L);
> WrPortI(SCCR,&SCCRShadow, 0x01);
> serDopen(2400L);
> WrPortI(SDCR,&SDCRShadow, 0x01);
> serEopen(2400L);
> WrPortI(SECR,&SECRShadow, 0x21);
> serFopen(2400L);
> WrPortI(SFCR,&SFCRShadow, 0x11);
>
> WrPortI(PBDDR,&PBDDRShadow,0xDC); // Port B Input and output Pins
> WrPortI(PCFR,&PCFRShadow,0x55); // Serial Port C
> WrPortI(PDALR,&PDALRShadow,0x30); // Serial Port F
> WrPortI(PDDDR,&PDDDRShadow,0x64); // Serial Port F
> WrPortI(PDFR,&PDFRShadow,0x04); // Serial Port F
> WrPortI(PEAHR,&PEAHRShadow,0x30); // Serial Port E
> WrPortI(PEDDR,&PEDDRShadow,0x40); // Serial Port E
> WrPortI(PEFR,&PEFRShadow,0x40); // Serial Port E
> WrPortI(SACR,&SACRShadow,0x01); // Serial Port A
> WrPortI(SBCR,&SBCRShadow,0x01); // Serial Port B
> WrPortI(SCCR,&SCCRShadow,0x01); // Serial Port C
> WrPortI(SDCR,&SDCRShadow,0x01); // Serial Port D
> WrPortI(SECR,&SECRShadow,0x21); // Serial Port E
> WrPortI(SFCR,&SFCRShadow,0x11); // Serial Port F
>
> Thank's
>
> Akis Start a New Thread

Hi Tom and thank you for your answer
All these WrPortI commands are automatically generated from the “Rabbit
4000 I/O lib utility” program, and I don’t have the time to see what exactly
do.
I suppose the progam knows.
The definitions that we are interested for are :
 
#define SERB_TXPORT
PCDR
#define BDRIVE_TXD 4
#define SERB_RXPORT PCDR
#define BDRIVE_RXD
5
All the above normally redirect the serial port
B to PC4,PC5
And the port works fine but with the port closed
for example when you format the ‘a’ partition the printer connected to serial
portB print many “!@#@$#” .
But only in format. When the port is closed you
can access the fat and the printer is silent and after you can print (I think
this is not a safe method because I have the example of the format and in a
combination in the future I will have problem).
I think that PD4,PD5,PC4,PC5 are by two connected
together in the module’s PCB or the above definitions are invisible in some lib
routines.
Anyway , as I saw the only way (to be sure) is to
forget the serial port B when you have to work with the fat.
Thank’s
Akis
 

________________________________
From: Tom Collins
To: r...
Sent: Thursday, July 26, 2012 7:29 PM
Subject: Re: [rabbit-semi] RCM6700 6 serial ports and fat

 

I'm a little concerned about all of the WrPortI() commands.  The whole point of the serial port macro definitions is for the serial library to do that work for you when you call serXopen().

Instead of actually writing the registers, change your code to print something out if the shadow register doesn't match what you're trying to set it to.  Then, look up the register definition and see why the library has set the register differently than how you're trying to set it.

Overwriting an entire register like that is only a good idea if you know exactly what you're doing and why you're doing it.  If you only need to change some of the bits, then use the shadow register to keep the bits you aren't changing, or use BitWrPortI() to limit your changes to certain bits.
-Tom

On Jul 25, 2012, at 5:01 PM, akisppoli wrote:

 
>Hi all
>
>I have a problem using an RCM6700 with the 6 serial ports enabled and the fat filesystem. In datasheets i saw that rcm uses the serial port B
>pins to drive the serial flash (PD4,PD5,PD6). In IOconfig i have change the serial portB to pins PC4,PC5. In this configuration if the serial port B is closed, the fat works fine but if is opened some times the fat works ans some times blocks (is in blocking mode) randomly.
>There is another define that i missed? I will test to open the portB only when i need it (when i use it i dont need the fat) but is a safe method ?
>
>Below is all the definitions
>
>#define AINBUFSIZE 31
>#define AOUTBUFSIZE 31
>#define SERA_TXPORT PCDR
>#define ADRIVE_TXD 6
>#define SERA_RXPORT PCDR
>#define ADRIVE_RXD 7
>#define BINBUFSIZE 31
>#define BOUTBUFSIZE 31
>#define SERB_TXPORT PCDR
>#define BDRIVE_TXD 4
>#define SERB_RXPORT PCDR
>#define BDRIVE_RXD 5
>#define CINBUFSIZE 31
>#define COUTBUFSIZE 31
>#define SERC_TXPORT PCDR
>#define CDRIVE_TXD 2
>#define SERC_RXPORT PCDR
>#define CDRIVE_RXD 3
>#define DINBUFSIZE 31
>#define DOUTBUFSIZE 31
>#define SERD_TXPORT PCDR
>#define DDRIVE_TXD 0
>#define SERD_RXPORT PCDR
>#define DDRIVE_RXD 1
>#define EINBUFSIZE 31
>#define EOUTBUFSIZE 31
>#define SERE_TXPORT PEDR
>#define EDRIVE_TXD 6
>#define SERE_RXPORT PEDR
>#define EDRIVE_RXD 7
>#define FINBUFSIZE 31
>#define FOUTBUFSIZE 31
>#define SERF_TXPORT PDDR
>#define FDRIVE_TXD 2
>#define SERF_RXPORT PEDR
>#define FDRIVE_RXD 3
>
>and the settings
>
>serAopen(9600L);
>WrPortI(SACR,&SACRShadow, 0x01);
>serBopen(9600L);
>WrPortI(SBCR,&SBCRShadow, 0x01);
>serCopen(2400L);
>WrPortI(SCCR,&SCCRShadow, 0x01);
>serDopen(2400L);
>WrPortI(SDCR,&SDCRShadow, 0x01);
>serEopen(2400L);
>WrPortI(SECR,&SECRShadow, 0x21);
>serFopen(2400L);
>WrPortI(SFCR,&SFCRShadow, 0x11);
>
>WrPortI(PBDDR,&PBDDRShadow,0xDC); // Port B Input and output Pins
>WrPortI(PCFR,&PCFRShadow,0x55); // Serial Port C
>WrPortI(PDALR,&PDALRShadow,0x30); // Serial Port F
>WrPortI(PDDDR,&PDDDRShadow,0x64); // Serial Port F
>WrPortI(PDFR,&PDFRShadow,0x04); // Serial Port F
>WrPortI(PEAHR,&PEAHRShadow,0x30); // Serial Port E
>WrPortI(PEDDR,&PEDDRShadow,0x40); // Serial Port E
>WrPortI(PEFR,&PEFRShadow,0x40); // Serial Port E
>WrPortI(SACR,&SACRShadow,0x01); // Serial Port A
>WrPortI(SBCR,&SBCRShadow,0x01); // Serial Port B
>WrPortI(SCCR,&SCCRShadow,0x01); // Serial Port C
>WrPortI(SDCR,&SDCRShadow,0x01); // Serial Port D
>WrPortI(SECR,&SECRShadow,0x21); // Serial Port E
>WrPortI(SFCR,&SFCRShadow,0x11); // Serial Port F
>
>Thank's
>
>Akis
>
> Start a New Thread