C
#define GFX_GCLK_DIVIDER 61
Overview
The following are additional Hardware Profile macros used when using the driver for the Microchip Graphics Module that comes with the PIC Microcontroller (PIC24FJ256DA210 Device Family) (PIC24FJ256DA210_DEV_BOARD).
- When using internal or external memory
- GFX_GCLK_DIVIDER - Set the clock divider for the pixel clock.
- GFX_DISPLAY_BUFFER_START_ADDRESS - Set the Display Buffer location.
- GFX_DISPLAY_BUFFER_LENGTH - Set the Display Buffer length (size) in bytes. This is calculated by the display's width*height*(color depth/2).
- When using external memory only. External memory may be placed in chip select 1 (CS1) and/or chip select 2 (CS2) regions. Refer to EPMP Family Reference Manual for details on how to use EPMP for graphics applications.
- GFX_EPMP_CS1_BASE_ADDRESS - Set the location of the external memory mapped to the EPMP CS1.
- GFX_EPMP_CS2_BASE_ADDRESS - Set the location of the external memory mapped to the EPMP CS2.
- GFX_EPMP_CS1_MEMORY_SIZE - Set the size of the memory mapped to the EPMP CS1. This value sets how many EPMP address lines will be used.
- GFX_EPMP_CS2_MEMORY_SIZE - Set the size of the memory mapped to the EPMP CS2. This value sets how many EPMP address lines will be used.
|
Buffer Name |
Enabled Features |
External Memory Required |
Display Buffer Location |
|
none |
EQ1 |
chip select 1 region. | |
|
EQ2 |
chip select 1 region. | ||
|
EQ3 |
chip select 1 region. | ||
|
none |
EQ4 |
chip select 2 region. | |
|
EQ5 |
chip select 2 region. | ||
|
EQ6 |
chip select 2 region. |
|
Equation |
Description |
|
EQ1 | |
|
EQ2 | |
|
EQ3 |
GFX_EPMP_CS1_MEMORY_SIZE >= (GFX_DISPLAY_BUFFER_LENGTH*2) + GFX_COMPRESSED_BUFFER_SIZE + GFX_DECOMPRESSED_BUFFER_SIZE |
|
EQ4 | |
|
EQ5 | |
|
EQ6 |
GFX_EPMP_CS2_MEMORY_SIZE >= (GFX_DISPLAY_BUFFER_LENGTH*2) + GFX_COMPRESSED_BUFFER_SIZE + GFX_DECOMPRESSED_BUFFER_SIZE |