[En-Nut-Discussion] changing of OS v4.2.1 to v4.3.3 bit wiht respect to ToWireBitBanningInterFase

[Lokker, Ronald]

Super Developers,

Question

i use a at91sam7x-ek board and i inplemented a RTC circuit as the
eternut3 board and i enabele in the config X12RTC
		(nut os configuration - Device drivers - x12xx driver -
system configuration - ENABELED) 

but the cpu's are different ant the i/o ports are not the same
	ethernut    board CPU AT91R40008	clock at Poort P17
data at Poort P16	(cpu has 1 poort)
	and i use e free poort to te SAM cpu as follows
	atmelsam board CPU AT91SAM7X	clock at Poort PA29	data at
Poort PA26	(cpu has 2 poorts PA and PB)

so i eddit the file (first i copy the file twbbif.c to twbbifsam.c) and
edit the file twbbifsam.c an change

this

	#if defined(__arm__)
	
	#include <arch/arm.h>

	#ifndef TWI_SDA_BIT
	#define TWI_SDA_BIT     16
	#endif
	#ifndef TWI_SDA_PE_REG
	#define TWI_SDA_PE_REG  PIO_PER
	#endif
	#ifndef TWI_SDA_OE_REG
	#define TWI_SDA_OE_REG  PIO_OER
	#endif
	#ifndef TWI_SDA_OD_REG
	#define TWI_SDA_OD_REG  PIO_ODR
	#endif
	#ifndef TWI_SDA_COD_REG
	#define TWI_SDA_COD_REG PIO_CODR
	#endif
	#ifndef TWI_SDA_SOD_REG
	#define TWI_SDA_SOD_REG PIO_SODR
	#endif
	#ifndef TWI_SDA_PDS_REG
	#define TWI_SDA_PDS_REG PIO_PDSR
	#endif	

	#ifndef TWI_SCL_BIT
	#define TWI_SCL_BIT     17
	#endif
	#ifndef TWI_SCL_PE_REG
	#define TWI_SCL_PE_REG  PIO_PER
	#endif
	#ifndef TWI_SCL_OE_REG
	#define TWI_SCL_OE_REG  PIO_OER
	#endif
	#ifndef TWI_SCL_OD_REG
	#define TWI_SCL_OD_REG  PIO_ODR
	#endif
	#ifndef TWI_SCL_COD_REG
	#define TWI_SCL_COD_REG PIO_CODR
	#endif
	#ifndef TWI_SCL_SOD_REG
	#define TWI_SCL_SOD_REG PIO_SODR
	#endif

in that

	#if defined(__arm__)
	
	#include <arch/arm.h>
	
	#ifndef TWI_SDA_BIT
	#define TWI_SDA_BIT     26
	#endif
	#ifndef TWI_SDA_PE_REG
	#define TWI_SDA_PE_REG  PIOA_PER
	#endif
	#ifndef TWI_SDA_OE_REG
	#define TWI_SDA_OE_REG  PIOA_OER
	#endif
	#ifndef TWI_SDA_OD_REG
	#define TWI_SDA_OD_REG  PIOA_ODR	
	#endif
	#ifndef TWI_SDA_COD_REG
	#define TWI_SDA_COD_REG PIOA_CODR
	#endif
	#ifndef TWI_SDA_SOD_REG
	#define TWI_SDA_SOD_REG PIOA_SODR
	#endif
	#ifndef TWI_SDA_PDS_REG
	#define TWI_SDA_PDS_REG PIOA_PDSR
	#endif
	
	#ifndef TWI_SCL_BIT
	#define TWI_SCL_BIT     29
	#endif
	#ifndef TWI_SCL_PE_REG
	#define TWI_SCL_PE_REG  PIOA_PER
	#endif
	#ifndef TWI_SCL_OE_REG	
	#define TWI_SCL_OE_REG  PIOA_OER
	#endif
	#ifndef TWI_SCL_OD_REG
	#define TWI_SCL_OD_REG  PIOA_ODR
	#endif
	#ifndef TWI_SCL_COD_REG
	#define TWI_SCL_COD_REG PIOA_CODR
	#endif
	#ifndef TWI_SCL_SOD_REG
	#define TWI_SCL_SOD_REG PIOA_SODR
	#endif

and than last but no least

edit the file ((so this choosen the file by config) HW_MCU_AT91R40008
use twbbif.c and HW_MCU_AT91SAM7X use twbbifsam.c)

\ethernut-4.2.1\nut\conf\dev\dev.nut

from this 

    --
    -- Simple Interface Drivers.
    --
    {
        name = "nutdev_twbbif",
        brief = "Bit Banging Two Wire",
        description = "Tested on AT91 only.",
        requires = { "HW_MCU_AT91R40008" },
        provides = { "DEV_TWI" },
        sources = { "twbbif.c" }
    },

to that

    --
    -- Simple Interface Drivers.
    --
    {
        name = "nutdev_twbbif",
        brief = "Bit Banging Two Wire",
        description = "Tested on AT91 only.",
        requires = { "HW_MCU_AT91R40008" },
        provides = { "DEV_TWI" },
        sources = { "twbbif.c" }
    },
    {
        name = "nutdev_twbbif",
        brief = "Bit Banging Two Wire SAM",
        description = "Tested on SAM only.",
        requires = { "HW_MCU_AT91SAM7X" },
        provides = { "DEV_TWI" },
        sources = { "twbbifsam.c" }
    },

and than it is working 

but i wil now change from os v4.2.1 to v4.3.3

and i have heard that the bit ToWireBitBanningInterFase ar now
configurabel 

and the question are how to do ???

ps let this also a good lesson to change the os device of your choic

Ronald  :-)

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