Problem in Wifi/BLE module assembled on GR-LYCHEE board.

Hi Chintu,

Any updates on this issue? Have you solved this already?

JB
RenesasRulz Forum Moderator

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Hi Chintu,

Any updates on this issue? Have you solved this already?

JB
RenesasRulz Forum Moderator

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https://academy.renesas.com/
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Hi JB,
Sorry, There are no updates on this issue. Still this issue is pending. I tried to solve myself but all in vain.

I was testing the ESP32-WROOM-32 module permanently soldered on GR-LYCHEE BOARD. I have initialized UART0 for module GPIO1->ESP_TXD & GPIO3->ESP_RXD pin connected between ESP module & R7S721030VCFP SoC. When i used standard AT firmware as recommend by Espressif ( ESP32-WROOM-32 module maker) .It was found that it was incorrectly answering the standard AT commands.

Therefore, i decided to upgrade the AT command firmware given at link: www.espressif.com/.../ESP32-WROOM-32_AT_Bin_V2.0.zip
To load this version of AT firmware, i followed the steps given at link: github.com/.../GR-Boards_ESP32_Serial_Bridge

Since R7S721030VCFP SoC is wired like Serial to SPI bridge between ESP32 module & PC.

Even after following the procedure correctly as given at github.com/.../GR-Boards_ESP32_Serial_Bridge ,

it was not responding correctly, I also tried to follow the steps given in example www.renesas.com/.../lychee-project-connect-smartphone-ble.html

But again response was incorrectly as given below:


AT<CR><LF>
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41) es®ÿ.[0;32mI‚’.[0;
Å0½Á<CR><LF>ready<CR><LF>

AT+BLEINIT=2
Ans: ets Jun 8
2016 eÿÿ Juÿÿ 8 201ÿ
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) esdr1700im=0.[ŠÂ.[ÿ;
32mI (541) esÉõ.[0;32m
Idrd..[z™*…<CR><LF>ready<CR><LF>

AT+BLEGATTSSRVCRE
Ans:ets Jun 8 2016 eÿÿ Jÿÿ ÿ8ÿ
ÿÿ16 ÿ‹ÿcÿÁ0ÿ¹ÿ‚ÂÑ.‘•ÿ
ÿÉÿHhÿ(Ñÿ.ÿ[ÿ‚Šÿÿÿÿ ÿ:
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I ÿ169) esdr(1‚Á}Á0m.
‚Š..[ÿ;32mI (541ÿ es–õ
.[0;32mI Ñ0.[0¥Ñ‰±<CR><LF>ready<CR><LF>

AT+BLEGATTSSRVSTART
Ans:ets Jun 8 2016 eÿÿ Jun ÿ
8ÿ201ÿ ÿ‹ÿ±ÿbÿÿÿÿÿ‚ÿ×r«ÿÿ.ÿÿÿ%£+¬ë.ÿ"ÿJÿ‚‚.º
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mI (169) es–õ1700im=0.
[ŠÂ.ÿÿ;32mI (541) es–õ
.[0;32mIdrd..[z™*…<CR><LF>ready<CR><LF>

AT+BLEADVSTART
Ans:ets Jun 8 2016 etÿ ÿÿÿ ÿ8 2016 0Âÿ.ÿÿÙÿ‚,
l.[… 1:®«£+2ÿot..’j‚‚ÿ.ÿm‚‚• ’j..’jJ..š.
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ÿ32mI (541) es‚Âÿÿ0;32
mI’’.[0;‚‚Áå<CR><LF>ready<CR><LF>


Cross Compiler issue:

Compiler recommended by renesas : Mbed,e2studio, IDE for GR.

Compiler Feedback: I have tested these three compilers. I found IDE for GR is easy to configure But Mbed & e2studio are heavy & bulky, also complicated to configure. All these three compilers have generated very & bulk *.bin (binary file) to load inside GR-LYCHEE BOARD. A small code of blinking four LEDS soldered on-board, source code given as example is too much complicated i.e many files need to be included in complicated fashion.

Compiler recommended by me : Segger embedded studio.

Compiler Feedback: I have tested this compiler. I found this IDE easy to configure. It generates excellent quality *.bin (binary file) with a very smaller memory footprint. But I need to do painstaking research work to separate the required files from the r01an4310ej0300-rza1-swpkg.zip software package to compile various examples like blinky,switch,uart etc.


Board level design issue:

GR-LYCHEE board contains LPC11U35FHI33/501 to load the *.bin (binary file) in R7S721030VCFP SoC for execution. It creates usb mass storage device where *.bin (binary file) is to copied for programming R7S721030VCFP SoC.

Technical issue: LPC11U35FHI33/501 on-board demands CMSIS-DAPLINK driver for which files to configure this are not available on net. It does not have debugging facility which complicates or

slows down the development. So, please! provide a debugger emulator inside LPC11U35FHI33/501 which we can easily configure inside all cross-compiler like Segger embedded studio, Mbed,e2studio, IDE for GR.


Please! revert me asap.

Hi,

I did it.

First, I did flash the bin serial bridge you mentioned.

Then I connected the USB cable to USB0 of GR-LYCHEE with pushing UB0.

Then I dowonload the Flash Tool V3.8.5 from expressif. 

Then I started to flash the firmware as below.

 

Then I disconnect and connect the USB cable to MBED connector on GR-LYCHEE.

That is for confirmation to execute AT commands as following.

Then I tried the BLE sample code which is described in Gadget Renesas Website you mentioned.

As a result, I did connect GR-LYCHEE to my iPhone using Light Blue as following.

I have received this message from Espressif:
If you use ESP32-WROOM-32m, just need 4 pins :GP IO-16, GPIO-17 , 3V3, GND , then can use AT commands to control module.