CIE1931Yxy转RGBPWM_Yxy转RGB_cie1931syY_伽玛_CIExyY转RGB_ZIGBEEYxy坐标转R

#define PWM 255 /********************************************************************* * @fn XYToRGBPWM() * * @brief currentX X坐标值 （0-65536） currentY Y坐标值 （0-65536） currentLevel 亮度等级（1-255） * * @return none **********************************************************************/ void XYToRGBPWM(uint16_t currentX, uint16_t currentY, uint8_t currentLevel) { uint32_t scratch; uint64_t X32, Y32, Z32; int64_t R32, G32, B32; uint64_t temp; uint32_t var_R; uint32_t var_G; uint32_t var_B; X32 = currentX; Y32 = currentY; scratch = X32 + Y32; if (scratch > 65536) { return; } Z32 = 65536 - (X32 + Y32); R32 = (X32 * 2690) - (Y32 * 1276) - (Z32 * 414); G32 = ((Y32 * 1978) + (Z32 * 44)) - (X32 * 1022); B32 = (X32 * 61) + (Z32 * 1163) - (Y32 * 224); if (R32 < 0) { R32 = 0;} if (G32 < 0) {G32 = 0;} if (B32 < 0) {B32 = 0;} var_R=R32; var_G=G32; var_B=B32; temp = var_R*(PWM) / (65536000); temp *= currentLevel; var_R = temp/255; if(var_R>maxPwmDrive) {var_R=maxPwmDrive;} temp = var_G *(PWM) / (65536000); temp *= currentLevel; var_G = temp/255; if(var_G>maxPwmDrive) { var_G=maxPwmDrive;} temp = var_B *(PWM) / (65536000); temp *= currentLevel; var_B = temp/255; if(var_B>maxPwmDrive) {var_B=maxPwmDrive;} //PWM值保存在 var_R; //var_G; //var_B; }