Kinetis Microcontrollers中的主题 Re: K60+TWR_LCD with 8-bit Flexbus interface

K60+TWR_LCD with 8-bit Flexbus interface

vanajagujjala — Tue, 24 Feb 2015 14:12:02 GMT

Hi,

This is vanaja. I am doing K60-120MHZ Tower kit + 3.2'inch TWR_LCD with flexbus interface in 8-bit mode.previously I worked with K60-120MHZ Tower kit + 3.2'inch TWR_LCD flexbus in 16-bit mode ,it is working fine but, it is not working in 8-bit mode means nothing on Display.What is the problem?any body explain about Flexbus 8-bit mode for TWR_LCD?

SW1-DIP1 - ON

DIP2 - ON

DIP3 - ON

DIP4 - ON

DIP5 - ON

DIP6 - ON

DIP7 - ON

DIP8 - OFF

This is the switch setting for 8-bit mode.

Re: K60+TWR_LCD with 8-bit Flexbus interface

Carlos_Musich — Wed, 25 Feb 2015 00:44:33 GMT

Hi Vanaja,

the hardware configuration is OK. Did you make the appropriate changes in Flexbus initialization?

Regards,

Carlos

Re: K60+TWR_LCD with 8-bit Flexbus interface

vanajagujjala — Wed, 25 Feb 2015 04:23:13 GMT

Hi Carlos,

Yes.I made the changes in Flexbus initialization.AS mentioned below

FLEXBS Initialization:

	#ifdef D4DLCD_DISPLAY_MCU_USER_INIT
	D4DLCD_DISPLAY_MCU_USER_INIT
	#endif

D4DLCD_FLEX_CSAR = D4DLCD_FLEX_DC_ADDRESS;

// CS0 base address

D4DLCD_FLEX_CSMR = D4DLCD_FLEX_ADRESS_MASK | D4DLCD_FLEX_CSMR_V_MASK; // The address range is set to 128K because the DC signal is connected on address wire

D4DLCD_FLEX_CSCR = D4DLCD_FLEX_CSCR_MUX_MASK | D4DLCD_FLEX_CSCR_AA_MASK | D4DLCD_FLEX_CSCR_PS1_MASK; // FlexBus setup as fast as possible in multiplexed mode

PORTC_PCR8=ALT5; PORTC_PCR9=ALT5; PORTC_PCR10=ALT5; PORTC_PCR11=ALT5;PORTD_PCR1=ALT5; PORTD_PCR2=ALT5;\

PORTD_PCR3=ALT5; PORTD_PCR4=ALT5; PORTD_PCR5=ALT5; PORTD_PCR6=ALT5; PORTB_PCR17=ALT5; PORTB_PCR18=ALT5;\

FLEX_CLK_INIT;SIM_SOPT2 |= SIM_SOPT2_FBSL(3); SIM_SCGC7 |= SIM_SCGC7_FLEXBUS_MASK; //disabled

#define D4DLCD_FLEX_BASE_ADDRESS 0xA0010000

#define D4DLCD_FLEX_DC_ADDRESS 0xA0000000

#define D4DLCD_FLEX_ADRESS_MASK 0x00010000

#define D4DLCD_FLEX_CSCR_MUX_MASK (FB_CSCR_BLS_MASK | CSCR_RESET)

#define D4DLCD_FLEX_CSCR_PS1_MASK (FB_CSCR_PS(1))

//8-bit

is it right? need to any changes?

Re: K60+TWR_LCD with 8-bit Flexbus interface

Carlos_Musich — Fri, 27 Feb 2015 22:48:18 GMT

Hi Vanaja,

I am not familiar with D4D and with the macros used in the initialization you shared.

Please refer to the post below for Flexbus examples. Here you will find also a document explaining the Flexbus configuration.

FlexBus in 16 bit mode and 8 bit access

Regards,

Carlos

Re: K60+TWR_LCD with 8-bit Flexbus interface

vanajagujjala — Sat, 28 Feb 2015 08:29:37 GMT

Hi Carlos,

Thank you for the reply.And my problem is solved.Thanks.