/
gamma_range_measure.c
52 lines (44 loc) · 1.58 KB
/
gamma_range_measure.c
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#ifdef GAMMA_RANGE_MEASURE
#define TASK_STK_SIZE 1024 /* Size of each task's stacks (# of WORDs) */
OS_STK TaskStartStkGRM[TASK_STK_SIZE];
unsigned short grm_task_id = 66;//0;
void GRMTask(void *);
#define MASK_R 0xc00
#define MASK_G 0xa00
#define MASK_B 0x900
INT32U gamma_threshold = 0;
INT32U gamma_flag = 0;
void program_gamma(int);
#endif
#ifdef GAMMA_RANGE_MEASURE
AVTaskCreate(GRMTask, 0, &TaskStartStkGRM[TASK_STK_SIZE - 1],20, &grm_task_id);
#endif
#ifdef GAMMA_RANGE_MEASURE
void GRMTask(void *arg)
{
if(gamma_flag)
{
gamma_flag = 0;
program_gamma(MASK_R);
program_gamma(MASK_G);
program_gamma(MASK_B);
}
//AVTaskDel(grm_task_id);
}
void program_gamma(int color)
{
while (!(*(volatile unsigned *)0x01101200 & (0x1 << 5)));
*(volatile unsigned *)0x01101208 = color;
for (int i=0;i<256;i++) {
while (!(*(volatile unsigned *)0x01101200 & (0x1 << 4)));
if(i < gamma_threshold)
*(volatile unsigned *)0x01101204 = 0;
else if(i > gamma_threshold)
*(volatile unsigned *)0x01101204 = 1023;
else if(i = gamma_threshold)
*(volatile unsigned *)0x01101204 = gamma_threshold << 2;
}
while (!(*(volatile unsigned *)0x01101200 & (0x1 << 5)));
*(volatile unsigned *)0x01101208 = (color | 0x23);
}
#endif