#include "lq035q1dh02.h"
#include "ad7879.h"
#include "ADP5588_Driver.h"
#include "bf52x_spi.h"
#include "DPM_Config.h"
#include "bf52x_uart.h"
#include "tll_config.h"
#include "tll6527_core_timer.h"
#include "isrDisp.h"
Include dependency graph for lq035q1dh02.c:
Functions | |
| void | display_DMA_INTERRUPT_HANDLER (void *) |
| static void | display_lcdBackLight (unsigned char state) |
| static void | display_dmaInit (display_t *state) |
| function for initializing dma | |
| static void | display_dmaDisable (void) |
| function for disabling dma | |
| static void | display_ppiInit (void) |
| function for initializing ppi | |
| static void | __attribute__ ((section(".sram_app.text"))) |
| function for turning off backlight | |
| static void | display_dmaEnable (void) |
| function for enabling dma | |
| int | display_Init (display_t *state, int horizontalLength, int verticalLength, enum dispaly_pixelFormat pixFormat, enum display_rev reverse, unsigned short *dmaStartAddress1, isrDisp_t *pIsrDisp) |
| Initializes the LQ035Q1DH02 LCD System. | |
| int | display_imageShow (display_t *state, unsigned short *displayScreen) |
| Image Display. | |
| int | display_imageShowDone (display_t *state) |
| Image Show Complete. | |
| int | display_slackGet (display_t *state) |
| Slack Get. | |
| int | display_statsGet (display_t *state, unsigned int *nrUpdates, unsigned int *nrSame) |
| statistic get | |
| int | display_Release (display_t *state) |
| Release the LQ035Q1DH02 LCD System. | |
Variables | |
| tscrAD7879_t | tscrState |
| display_t | displayState [LQ035Q1DH02_NUMBERS] |
It also contains internal (non user exposed) functions. The functions are as follows:
User Exposed Functions:
display_Init : sets up the DMA, Timers, PPI, and LCD display_imageShow dispLQ035Q1DH02_Release : disables LCD, DMA, Timers and PPI
Internal Functions:
dispLQ035Q1DH02_lcdBackLight : switches on/off the backlight dispLQ035Q1DH02_dmaInit : configures DMA dispLQ035Q1DH02_dmaEnable dispLQ035Q1DH02_dmaDisable dispLQ035Q1DH02_ppiInit : configures PPI dispLQ035Q1DH02_ppiEnable dispLQ035Q1DH02_ppiDisable dispLQ035Q1DH02_timerInit : configures TIMER0 and Timer1 for use as Frame Syncs for PPI dispLQ035Q1DH02_timerEnable dispLQ035Q1DH02_timerDisable dispLQ035Q1DH02_lcdConfig : Configures LCD in accordance with the pixel format and orientation of image passed to display_Init.
Organization: The Learning Labs
Tested: Compiler bfin-elf-gcc; Output format Bare Metal Elf; Target TLL6527M V1.2
Revised: 20120329, Author: C.Lavania, Notes: Moved Blanking Lines to the beginning of the DMA Buffer for better synchronization, modified passiveBuffer start address to be shifted such that blanking lines are not included in its calculation.
Revised: 20120328, Author: C.Lavania, Notes: Introduced a static instance of the state structure which can be modified by the ISR, and hence the passive buffer addresses can be updated. Modified the dispLQ035Q1DH02_Init() and dispLQ035Q1DH02_dmaInit(), and the ISR in accordance with this
Revised: 20120327, Author: C.Lavania, Notes: Cleaned up the code, modified the exposed function prototypes to avoid usage of 3 buffers (2 DMA and 1 extra). Now only 2 DMA buffers are used, used core timers to generate delays, removed hard coded addresses.
Revised: 20120326, Author: C.Lavania, Notes: Cleaned up the code, added boiler plate.
Revised: 20120324, Author: C.Lavania, Notes: Modified the file to use NEU common code.
Revised: 20120323, Author: C.Lavania, Notes: Modified the delays in lcdConfig to use core timers.
Revised: 20120322, Author: C.Lavania, Notes: Moved the PPI, Timer and LCD Initialization, Enable, Disable functions to sram, moved pixelPut function to FB layer, added SPI nugget support to the lcdConfig and lcdDisable functions, cleaned up the code, modified the display_Init function to also take image orientation as input param, while adding support for BGR565 pixel format
Revised: 20120321, Author: C. Lavania, Notes: Added Interrupt Handler, and moved filling up of DMA buffers to FB layer
Revised: 20120317, Author: C. Lavania, Notes: Modified the code to act as device level driver
Revised: 20120206, Author: C. Lavania, Notes: Added Nuggets
Revised: 20111124, Author: C. Lavania, Notes: Ported from VDSP to GNU
Created: 20090204, Author: D. Kiran, Notes: Created the Initial Version
References:
1. ADSP-BF52x Blackfin Processor Hardware Reference, Revision 1.0, March 2010
| static void __attribute__ | ( | (section(".sram_app.text")) | ) | [static] |
function for turning off backlight
INTERNAL FUNCTION
Pre-conditions:
Post condtions:
Parameters:
| state | backlight is to be switched on/off |
| void display_DMA_INTERRUPT_HANDLER | ( | void * | ) |
| static void display_dmaDisable | ( | void | ) | [static] |
function for disabling dma
INTERNAL FUNCTION
Pre-conditions:
Post condtions:
Parameters:
| None |
| static void display_dmaEnable | ( | void | ) | [static] |
function for enabling dma
INTERNAL FUNCTION
Pre-conditions:
Post condtions:
Parameters:
| None |
| static void display_dmaInit | ( | display_t * | state | ) | [static] |
function for initializing dma
INTERNAL FUNCTION
Pre-conditions:
Post condtions:
Parameters:
| state | address of LCD state variable |
| int display_imageShow | ( | display_t * | state, | |
| unsigned short * | displayScreen | |||
| ) |
Image Display.
This function is responsible to setup the DMA to display the new image Note : This function needs to be called each time a new image needs to be displayed on the screen
Pre-conditions:
Post condtions:
Parameters:
| state | address of LCD state variable | |
| displayScreen | the next frame to be displayed |
| int display_imageShowDone | ( | display_t * | state | ) |
Image Show Complete.
Blocks until last display_imageShow has completed. If no imageShow is pending, call returns immediately.
Pre-conditions:
Post condtions:
Parameters:
| state | address of LCD state variable |
| int display_Init | ( | display_t * | state, | |
| int | horizontalLength, | |||
| int | verticalLength, | |||
| enum dispaly_pixelFormat | pixFormat, | |||
| enum display_rev | reverse, | |||
| unsigned short * | dmaStartAddress1, | |||
| isrDisp_t * | pIsrDisp | |||
| ) |
Initializes the LQ035Q1DH02 LCD System.
This function initializes LCD System including related Timer, PPI, DMA Systems.
Pre-conditions:
Post condtions:
Parameters:
| state | address of LCD state variable | |
| horizontalLength | width of the frame (in pixels) | |
| verticalLength | height of the frame (in pixels) | |
| pixFormat | pixel is RGB565 or BGR565 or YUYV422 | |
| reverse | orientation of the image (0 for reverse and 1 for normal) | |
| dmaStartAddress1 | memory location of DMA buffer 1 | |
| dmaStartAddress2 | memory location of DMA buffer 2 |
| static void display_lcdBackLight | ( | unsigned char | state | ) | [static] |
| static void display_ppiInit | ( | void | ) | [static] |
function for initializing ppi
INTERNAL FUNCTION
Pre-conditions:
Post condtions:
Parameters:
| None |
| int display_Release | ( | display_t * | state | ) |
Release the LQ035Q1DH02 LCD System.
This function releases LCD System including related Timer, PPI, DMA Systems.
Pre-conditions:
Post condtions:
Parameters:
| state | address of LCD state variable |
| int display_slackGet | ( | display_t * | state | ) |
Slack Get.
Returns nanoSec until pending image switch is executed, 0 if no switch is pending.
Pre-conditions:
Post condtions:
Parameters:
| state | address of LCD state variable |
| int display_statsGet | ( | display_t * | state, | |
| unsigned int * | nrUpdates, | |||
| unsigned int * | nrSame | |||
| ) |
statistic get
gathers display statistics nrUpdates number of images updated nrSame number of identical images displayed
Pre-conditions:
Post condtions:
Parameters:
| state | address of LCD state variable |
| display_t displayState[LQ035Q1DH02_NUMBERS] |
1.4.7