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by rlev
Thu Aug 15, 2019 10:23 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

Good point.

Thank you very much again for your help PhilE.
It's very appreciated
by rlev
Thu Aug 15, 2019 9:48 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

PhilE, hcitool dev shows Devices: hci0 B8:27:EB:CD:............ Also using " sudo hcitool -i hci0 lescan " I am able to detect BLE devices nearby. At this point we would like to design a hat board with the Cypress WiFi/BT CYW43455 chip for the CM IO Board V3 https://www.raspberrypi.org/products/comp...
by rlev
Thu Aug 15, 2019 1:07 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

PhilE, After applying the last overlay dts file. the Bluetooth interface runs! :) systemctl status hciuart.service shows ● hciuart.service - Configure Bluetooth Modems connected by UART Loaded: loaded (/lib/systemd/system/hciuart.service; enabled; vendor preset: enabled) Active: active (running) sin...
by rlev
Wed Aug 14, 2019 12:52 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

PhilE, I have compiled the new cm-bt-overlay.dts and generated a new cm-bt.dtbo. After the CM3 boots up I see no Bluetooth . sudo btuart shows : Can't open serial port: No such file or directory Can't initialize device : No such file or directory sudo systemctl status hciuart.service shows : ● hciua...
by rlev
Tue Aug 13, 2019 1:18 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

PhilE, I have : - Wired the Bluetooth (tx,rx,cts,rts) pins from the CYW43455 module to the CM3 board. - Compiled the second cm-bt-overlay.dts you posted ( the one with flow control ) and copy to /boot/overlays /dts-v1/; /plugin/; /{ compatible = "brcm,bcm2835"; [email protected] { target = <&uart0>; __over...
by rlev
Sun Aug 11, 2019 10:30 pm
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

PhilE,

From your previous post regarding Bluetooth overlay.

Do I have to modify or add something to /boot/config.txt ?

Thanks
by rlev
Sun Aug 11, 2019 6:11 pm
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

/* UPDATE */ PhilE, After rechecking my wiring and shorting some cables I was able to get the SDIO interface working : ifconfig shows : lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1000 (Local Loopback) RX pa...
by rlev
Sat Aug 10, 2019 10:56 pm
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

PhilE, I have put a 33 Ohm resistor in SD_CLK as you have recommended. The WiFI/Bluetooth module seems to be initially detected but the dmesg show at the end :( 6.532410] brcmfmac: F1 signature read @0x18000000=0x15264345 [ 6.541010] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio fo...
by rlev
Fri Aug 09, 2019 12:50 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

@PhilE thanks for you suggestions. Using pins 22-27 and next line in config.txt dtoverlay=sdio,poll_once=on,sdio_overclock=25 and a 1K pull up resistor on SD_CLK as you suggested seems like the 4-bit SDIO mode works. I have connected the WiFi/BT CYW43455 module and dmesg shows : mmc1: new high speed...
by rlev
Thu Aug 08, 2019 11:29 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

After I connect a Digital Logic Analyzer the CM3 get stuck before reach the mmc driver loading.
I am able only to capture the SCLK signal.
clk.png
clk.png (2.55 KiB) Viewed 2158 times
I am using a direct connection to a sd card without pull up resistor. Maybe an impedance problem?

Thanks
by rlev
Wed Aug 07, 2019 11:54 pm
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

I tried 4-bit mode:

dtoverlay=sdio, poll_once=off,sdio_overclock=25

The CM3 is not able to boot and gets stuck.

The log shows
mmc1: new high speed SDHC card at address aaaa
....
....
mmc1: Timeout waiting for hardware interrupt
random: crng init done
by rlev
Wed Aug 07, 2019 10:51 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

Sorry PhilE my Bad.
by rlev
Wed Aug 07, 2019 10:44 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

Update : I have managed to get a sd card recognized as a storage using the next line in config.txt and wiring the sd card breakout board to pins 22-27 dtoverlay=sdio, poll_once=off,bus_width=1,sdio_overclock=25 Note the use of "bus_width=1". Without this instruction the CM3 does not complete the boo...
by rlev
Wed Jul 31, 2019 11:53 pm
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

Can anyone help with the posted issue?

Thanks in advance.
by rlev
Wed Jul 31, 2019 2:24 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

Thank you PhilE and techmasterjoe for feedback. After I added the next line to /boot/config.txt dtoverlay=sdio,gpios_34_39,sdio_overclock=25 The mmc1 interface seems to be recognized. The dmesg log shows : mmc1: new high speed SDIO card at address 0001 but also shows : brcmfmac: brcmf_chip_recogniti...
by rlev
Sun Jul 14, 2019 8:01 pm
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

Re: CM3 Plus and WiFi/BT CYW43455

Anyone ?
by rlev
Wed Jul 10, 2019 3:39 am
Forum: Compute Module
Topic: WiFi chip for Compute Module 3
Replies: 22
Views: 20772

Re: WiFi chip for Compute Module 3

Hello everyone, I would like to start a project with a CM3 + adding a Wi-Fi and BT module. Alone I can not and I would be willing to pay those who help me. I was thinking of using the LBEH5HY1MW of the Murata where it uses the CYW43455 which is lost to the Raspberry Pi 3 B +, but I could also chang...
by rlev
Wed Jul 10, 2019 3:34 am
Forum: Compute Module
Topic: CM3 Plus and WiFi/BT CYW43455
Replies: 35
Views: 3978

CM3 Plus and WiFi/BT CYW43455

I would like to add Wifi and Bluetooth 5 capabilities to a CM3 Plus. I am thinking about using the Cypress CYW43455 chipset . Does anybody knows or has documentation about how to connect the SDIO (WiFi) and UART 4-wires (Bluetooth) interfaces between this module and the CM3 Plus CPU ? Besides the ha...

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