LP55231: LP55231: Engine not trigger

Hi,

I've seen your problem, and I have some questions for you:

1.In the Github link, I find there are 10 examples and I don't know which one is confusing you.

2.LP55231 has three independent program execution engines, I don't  know if you can't use this function or you can't start the LP55231 device.

Besides, there are some suggestions for you:

1.You can check the LP55231 datasheet on ti.com, make sure relative registers are properly configured.

2.We also provide relevant software about   LP55231, you can use this as a reference.

3.If you want to evaluate the performance of the chip, I sincerely recommand you to use the official EVM.

Thanks,

Best Regards.

Ives, Li

Hi, 
Thanks for the response.


1) I follow this example (https://github.com/sparkfun/SparkFun_LP55231_Arduino_Library/blob/master/examples/engines-output-trigger/engines-output-trigger.ino)

Steps as per the above example:-

1) Reset WriteReg(0x3D, 0xff);
2) Enable WriteReg(0x00, 0x40 );
3) REG_MISC WriteReg(0x36,0x53);
4) SetLogBrightness For all channel
5) SetDriveCurrent for all channel and value 0x6F/0x7F

For Load program:-
1)
WriteReg(REG_CNTRL1, 0x00);
WriteReg(REG_CNTRL1, 0x15);

For running Engine:-

1)
SetEngineEntryPoint(0, 0);
SetEnginePC(0, 0);
2)
SetEngineModeFree(0);
SetEngineRunning(0);

And every 2 seconds GPIO11 set/reset for trigger signal of LP55231

Hi,

Can you share your mail id? i can share my source file.

Hi,

I notice that you set CNTRL1 register to 0x15, which means you don't enable the chip, you can try to change the value of CNTRL1 to 0x55.

If it doesn't work, you can contact my e-mail: ives-li@ti.com. 

HI,
I sent mail on  this mail id:- ives-li@ti.com.
Please check your mail

Hi,

Because of the NDA restriction, I can not receive your source file.

I'm sorry about that.

Hi,

which way to share file?

I think I can not receive your file, and I am a hardware engineer, which means I may not have the power to check your code.

But I think if you need, I can explain how to use our product and you can follow the guidance to find which step is wrong..

Thanks for the responce.

i will be very glad you guide me how to drive led driver.

Hi,

I will show you the register you need to configure down blow:

(00) ENABLE/ENGINE CNTRL: enable the device and choose the engine execution mode.

(01)ENGINE CNTRL2: use this register to Load or Run your program.

(04/05)OUTPUT ON/OFF: control on/off for D1-D9 output

(36)INT_CLK_EN: select the clock source, we need 32.7kHZ for correct operation.

(3A)STATUS/INTERRUPT: configure the interrupt for engines.

(4C/4D/4E)ENG PROG START ADDR: It is the start address for each engine program.

(4F)PROG MEM PAGE SELECT: use to select your program memory page, I will show your more details on blow photo.

(70H/75H) ENG MAPPING: you can read the mapping information from here.

Please check these registers.

Thanks!

Thanks for the reply, but still not working.

Write register and their value listed below,

Register value
00           60 //enable and engine 1 enable
36           01 //int_clk_en
01           20 //engine 1 load program mode
04           01 //d9 output mode
05           ff //d1-d8 output mode

Loadprogram (pattern,16)

4c           00 //ENG1 PROG START ADDR
4f            01 //page select 1
70           01 //ENG1 MAPPING MSB
71           ff // ENG1 MAPPING LSB

3A           02 //STATUS/INT

Hi,

I notice that you set 01ENGINE CHONTROL2 to 20, which means bit[5:4] is 10.

I think at first you should set the bits to 01 to load your program, after that, change the bits to 10 to run your program.

Besides, ENG1 MAPPING is a READ ONLY register, you can only read the situation of each output.

If you want to configure the engine or select the outputs you need, please use the LED Driver Instructions(Table 4) and LED Mapping Instructions(Table 5).

If you want to trigger your device ,you can find the trigger instruction in Branch Instructions(Table 6).

You can also find the description of each instruction in the datasheet.

Thanks.

Hi,
Stil not working,
Register           Value
0x3D                 0xff
0x00                 0x40
0x36                0x53

0x4f                 0x00 // page 0 is selcet for write value
0x4c                0x00 // 00 //ENG1 PROG START ADDR

0x3A               0x10 // clear engine register
0x01               0x10 // engine 1 in load program mode
0x04               0x01 // D9 led output mode
0x05               0xff // D1-D8 led output mode

0x50               0x9d // write data 50h
0x51               0xf0 // write data 51h

0x01               0x20 // engine 1 in run program mode
0x00               0x60 // ENGINE1_EXEC 1 in run program mode
0x37               0x00 // ENGINE1_EXEC 1 in run program mode

Hi,

One thing I find In your code is that the PROG START ADDR should be 50.

Besides, you write just one instruction, but you haven't selected the output you want to choose by the mux_sel instructin.

Registers value:

00 55
01 2A
02 00
03 00
04 01
05 FF
06 00
07 00
08 00
09 00
0A 00
0B 00
0C 00
0D 00
0E 00
16 00
17 00
18 00
19 00
1A 00
1B 00
1C 00
1D 00
1E 00
26 AF
27 AF
28 AF
29 AF
2A AF
2B AF
2C AF
2D AF
2E AF
36 51
37 02
38 00
39 00
3A 00
3B 00
3C 00
3D 00
3E 00
3F 19
40 00
41 8F
42 32
45 00
46 00
47 00
48 00
49 00
4A 00
4C 00
4D 10
4E 20
4F 05
70 00
71 04
72 00
73 00
74 00
75 00
76 00

Hi lves Li,

I compared ESP32 and CC1312 lauchpad with LP55231 sparkfun board. I found one thing. CC1312 can't reset. i.e. on reset(0x3d register) value is not set 0xff. other register can write/read sucessfully.

On Esp32 reset value write suceffuly. 

in CC1312 and LP55231, only (0x3d-->0xff) write failed. 

So what can I help you?

Hi,

Is their any solution available for write failed on 0x3d register?
I think, that is maybe one of the reasons of engine not trigger.

Could ESP32 write 0x3d register?

yes, I checked.
0x3d ---> 0xff write successfully.

So it is cause by your CC1312 code.

But I'm sorry  I can't  solve your software problem.

Only this register 0x3d-->0xff value write failed.
other register and value write successfully

I understand