Tool/software:
Hi TI experts,
HW information
Module: Imx729
Platform: TDA4AL-Q1
We found the AE convergence unstable and hunting
After analysis, we have some questions
1. If the other gain is set, the Imx729 needs two frames operating
logs show that the Imx729 needs two frames operating
Again from sp1hAgain: 28245 to sp1hAgain: 35306 to sp1hAgain: 44132
The curY=34 = sp1hAgain: 28245
Then the Again set to sp1hAgain: 44132 but the curY still = curY=34
[MCU2_0] 67.241669 s: [IMX728_FIH_SetAeParams, 1217] sp1hAgain: 28245, 0x121, fps: 40
[MCU2_0] 67.241712 s: [IMX728_FIH_SetAeParams, 1218] exposureTime: 11000000, exposureTimeLines: 1056, vmax: 2400
...
[MCU2_0] 67.566727 s: [IMX728_FIH_SetAeParams, 1217] sp1hAgain: 35306, 0x134, fps: 40
[MCU2_0] 67.566773 s: [IMX728_FIH_SetAeParams, 1218] exposureTime: 11000000, exposureTimeLines: 1056, vmax: 2400
[MCU2_0] 67.591120 s: AE debug: R = 21, G = 42, B = 21
[MCU2_0] 67.591179 s: AE debug: curY=34, avgY=34, locked=0, lockcnt=0
[MCU2_0] 67.591227 s: AE debug: inc Tmin=11000000, Tmax=11000000, Tstep=1
[MCU2_0] 67.591267 s: AE debug: i=0, r=1, num=1
[MCU2_0] 67.591298 s: AE debug: cA, cT, cAG, cDG = 1, 11000000, 35306, 256
[MCU2_0] 67.591337 s: AE debug: nA, nT, nAG, nDG = 1, 11000000, 44132, 256, r=1
[MCU2_0] 67.591647 s: [IMX728_FIH_SetAeParams, 1217] sp1hAgain: 44132, 0x147, fps: 40
[MCU2_0] 67.591693 s: [IMX728_FIH_SetAeParams, 1218] exposureTime: 11000000, exposureTimeLines: 1056, vmax: 2400
[MCU2_0] 67.616198 s: AE debug: R = 21, G = 42, B = 21
[MCU2_0] 67.616256 s: AE debug: curY=34, avgY=34, locked=0, lockcnt=0
[MCU2_0] 67.616301 s: AE debug: inc Tmin=11000000, Tmax=11000000, Tstep=1
[MCU2_0] 67.616340 s: AE debug: i=0, r=1, num=1
[MCU2_0] 67.616373 s: AE debug: cA, cT, cAG, cDG = 1, 11000000, 44132, 256
[MCU2_0] 67.616413 s: AE debug: nA, nT, nAG, nDG = 1, 11000000, 55165, 256, r=1
[MCU2_0] 67.616729 s: [IMX728_FIH_SetAeParams, 1217] sp1hAgain: 55165, 0x15b, fps: 40
[MCU2_0] 67.616773 s: [IMX728_FIH_SetAeParams, 1218] exposureTime: 11000000, exposureTimeLines: 1056, vmax: 2400
[MCU2_0] 67.641112 s: AE debug: R = 27, G = 53, B = 26
[MCU2_0] 67.641172 s: AE debug: curY=42, avgY=34, locked=0, lockcnt=0
I thought that because of the gain and curY inconsistency it causes the AE hunting
How can we control the gain and curY consistent in two frames?
2. The gain step almost = 1000gain
28245 to 35306
Could we control the step value?
Thanks