I make a call in the beginning of the code to change to I2C but it always returns "Ser

You listed only two lines of output: <code class="notranslate

Change to I2C returning Serial about tfmini-plus HOT 10 CLOSED

budryerson commented on August 27, 2024

Change to I2C returning Serial

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budryerson commented on August 27, 2024

I'm sorry for the delay. You've probably figured it out by this time.
But will you please send me all your code so I can duplicate your problem?
Thanks,
Bud

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runfastman commented on August 27, 2024

Here is the code. "sendCommand" for I2C returns "Ready" but the readings continue via RX [image: image.png]

…

On Thu, Dec 31, 2020 at 3:24 PM Bud Ryerson ***@***.***> wrote: I'm sorry for the delay. You've probably figured it out by this time. But will you please send me all your code so I can duplicate your problem? Thanks, Bud — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#22 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB7X5DUEXLGVLV5REPHHOODSXUBZZANCNFSM4VFXBPYQ> .

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budryerson commented on August 27, 2024

There was no attachment with your last message.
Please send me your entire sketch ("all your code") so that I can duplicate your problem.
You may send the archive to my email [email protected]
Please include images of your setup and cabling, if you think that will be helpful.
Thanks,
Bud

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budryerson commented on August 27, 2024

You listed only two lines of output:
SET_Mode: Status: SERIAL
00 00 00 00 00 00 00 00
Is that it? Only two lines? No "Hello"?
Something like:
TFMPlus Library Example - 18JUN2020
Your Software Serial assignment of Pins 0 & 1
SoftwareSerial mySerial( 0, 1);
appears to use the same pins as the hardware serial port.
Are you sure about those pin assignments?
Which Arduino board (and revision) are you using?
Is the Arduino working? Is the sensor working?
Is the Arduino working okay with the sensor in Serial mode?

We'll fix this.

Bud

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runfastman commented on August 27, 2024

1. I am confused. There are several lines of output. I used your example and added this at line 50 // - - - - - - - - - - - - - - - - - - - - - - - - printf( "SET_Mode I2C: "); if( tfmP.sendCommand(SET_I2C_MODE , 0))//SET_I2C_MODE, SET_SERIAL_MODE { tfmP.printReply(); } else { printf( "Failed: "); tfmP.printReply(); } //This is the output I get [image: image.png] 2. I was following the instructions "Delete the comment slashes // on lines 37 and 38 to invoke the library, and be sure to choose // the correct RX and TX pins: pins 10 and 11" I am using - "Nano V3.0 Module ATmega328P 5V 16MHz CH340G" with D0 & D1 as TX & RX 3. Yes, the sensor is working and giving me the correct distance with serial, but I prefer to use I2C to simplify multiple sensors from the same board.

…

On Fri, Jan 1, 2021 at 9:07 PM Bud Ryerson ***@***.***> wrote: 1. You listed only two lines of output: SET_Mode: Status: SERIAL 00 00 00 00 00 00 00 00 Is that it? Only two lines? No "Hello"? Something like: TFMPlus Library Example - 18JUN2020 2. Your Software Serial assignment of Pins 0 & 1 SoftwareSerial mySerial( 0, 1); appears to use the same pins as the hardware serial port. Are you sure about those pin assignments? Which Arduino board (and revision) are you using? 3. Is the Arduino working? Is the sensor working? Is the Arduino working okay with the sensor in Serial mode? We'll fix this. Bud — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#22 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB7X5DTWUDYPUMH3XPFHGLTSX2S2TANCNFSM4VFXBPYQ> .

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budryerson commented on August 27, 2024

I apologize for any confusion. Your [images] are not showing up here. Please save your output into a text file and attach or send me the file.
The D0 & D1 pins on the Nano V3.0 Module ATmega328P 5V 16MHz CH340G are the hardware serial lines that you use to program and communicate with the Nano from your IDE (running on your PC). The Nano has an onboard USB to TTL converter (CH340G) that requires the use of these pins. You cannot use these same pins to communicate with your TFMini-Plus. That's why we use the Software Serial library - because the ATmega328P does not have a second hardware serial port. I believe that pins 9 & 10 will work for that purpose (11 & 12 are for the SPI interface) ; but please check the Software Serial documentation for your particular board.

You say that your Nano and your TFMini-Plus are working together just fine in Serial Mode. I don't see how that is possible, so I must really be misunderstanding something. Again, please send me a text file of your output from running the example sketch in the Serial Mode. Pictures of your wiring would be helpful, too.
You are correct that the I2C Mode is the way to go. It will allow you to use more than one TFMini-Plus on the same bus.

Bud Ryerson
San Francisco

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runfastman commented on August 27, 2024

Thanks so much for your help with this! 1. Here is the output and a wire pic. The Distance changes if I put my hand above it. I do have to unplug the tx/rx wires to flash but then I plug back in and hit the rest button and monitor the output. TFMPlus Library Example - 18JUN2020 SET_Mode I2C: Status: READY 00 00 00 00 00 00 00 00 System reset: Status: TIMEOUT 44 0A 90 09 6F 00 00 00 Firmware version: Status: TIMEOUT D6 00 38 0A 90 09 C3 00 Data-Frame rate: Status: TIMEOUT 00 37 0B 90 09 62 00 00 Dist:0214cm Flux:02616 Temp:50°C Dist:0214cm Flux:02611 Temp:50°C Dist:0214cm Flux:02615 Temp:50°C [image: MiniWiring.jpg] 2. When I change to "SoftwareSerial mySerial(9,10);" Pins D6 D7, the result from 12c sendCommand is "Serial" instead of "Ready" and I don't get any distance readings. TFMPlus Library Example - 18JUN2020 SET_Mode I2C: Status: SERIAL 00 00 00 00 00 00 00 00 System reset: Status: TIMEOUT 00 00 00 00 00 00 00 00 Firmware version: Status: TIMEOUT 00 00 00 00 00 00 00 00 Data-Frame rate: Status: TIMEOUT 00 00 00 00 00 00 00 00 [image: MiniWiring9_10.jpeg]

…

On Sat, Jan 2, 2021 at 10:39 AM Bud Ryerson ***@***.***> wrote: 1. I apologize for any confusion. Your [images] are not showing up here. Please save your output into a text file and attach or send me the file. 2. The D0 & D1 pins on the *Nano V3.0 Module ATmega328P 5V 16MHz CH340G* are the hardware serial lines that you use to program and communicate with the *Nano* from your IDE (running on your PC). The *Nano* has an onboard USB to TTL converter (CH340G) that requires the use of these pins. You cannot use these same pins to communicate with your *TFMini-Plus*. That's why we use the Software Serial library - because the ATmega328P does not have a second hardware serial port. I believe that pins 9 & 10 will work for that purpose (11 & 12 are for the SPI interface) ; but please check the Software Serial documentation for your particular board. You say that your *Nano* and your *TFMini-Plus* are working together just fine in Serial Mode. I don't see how that is possible, so I must really be misunderstanding something. Again, please send me a text file of your output from running the example sketch in the Serial Mode. Pictures of your wiring would be helpful, too. 3. You are correct that the I2C Mode is the way to go. It will allow you to use more than one *TFMini-Plus* on the same bus. Bud Ryerson San Francisco — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#22 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB7X5DT6AAX3OFUNMAZW7GTSX5R7HANCNFSM4VFXBPYQ> .

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budryerson commented on August 27, 2024

Your images are still not showing.

You wrote that, "the sensor is working and giving me the correct distance with serial." So I asked to see the output from TFMP_example.ino, the Serial Mode example sketch, running correctly. I don't see that. In the output you show above, every command has failed.

You wrote, "I do have to unplug the tx/rx wires to flash but then I plug back in and hit the rest button and monitor the output."
Why are you plugging and unplugging wires? Which "tx/rx wires" are you talking about? How do you "monitor the the output?"

I get the uneasy feeling that you are still confusing hardware and software serial ports. The hardware serial port is for programming and monitoring ONLY. The Software Serial port is for communicating with the Lidar. Am I wrong?

Please let me know.

Bud

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runfastman commented on August 27, 2024

1. Correct , the other commands seem to timeout, but the distance is working. 2. *Why are you plugging and unplugging wires? Which "tx/rx wires" are you talking about?* *The white to tx and the green from RX (I shared pics on google drive with you)* 3. *How do you "monitor the the output?" * *I use the Serial monitor from arduino UI.* 4. *I get the uneasy feeling that you are still confusing hardware and software serial ports. The hardware serial port is for programming and monitoring ONLY. The Software Serial port is for communicating with the Lidar. Am I wrong?* *I may be, I have only used the RX and TX for a GPS chip. before. I tried using D6 and D7 (See other pic on Google drive) and I don't get any output the serial monitor. I have an Uno, but it also only has the one serial line on 0 & 1. *

…

On Sat, Jan 2, 2021 at 2:03 PM Bud Ryerson ***@***.***> wrote: Your images are still not showing. You wrote that, *"the sensor is working and giving me the correct distance with serial."* So I asked to see the output from TFMP_example.ino, the Serial Mode example sketch, running correctly. I don't see that. In the output you show above, every command has failed. You wrote, *"I do have to unplug the tx/rx wires to flash but then I plug back in and hit the rest button and monitor the output."* Why are you plugging and unplugging wires? Which *"tx/rx wires"* are you talking about? How do you *"monitor the the output?"* I get the uneasy feeling that you are still confusing hardware and software serial ports. The hardware serial port is for programming and monitoring ONLY. The Software Serial port is for communicating with the Lidar. Am I wrong? Please let me know. Bud — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#22 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB7X5DVPJOLIR7JKJM3CWRDSX6J4TANCNFSM4VFXBPYQ> .

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budryerson commented on August 27, 2024

Please understand that the Lidar device communicates with the Arduino - and the Arduino then turns around and communicates with the user (you). This requires two independent data channels. The USB cable connects the Arduino with your computer. It uses the D0 & D1 (TX/RX) pins. You cannot EVER use those to connect to the Lidar. You must use the Software Serial pins. BUT As soon as you send a SET_I2C_MODE command to the Lidar, that device can no longer communicate in serial mode. So DO NOT send any commands to change the communication mode until after we've got everything working in serial mode. Okay?
I am still not getting your files or images. Please contact me further by email at:
bud-at-budryerson-dot-com

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Change to I2C returning Serial about tfmini-plus HOT 10 CLOSED

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