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by JBDynamics
Sun Oct 21, 2018 4:22 pm
Forum: Compute Module
Topic: Using both UARTs in the Raspberry Pi Compute Module 3?
Replies: 1
Views: 3007

Re: Using both UARTs in the Raspberry Pi Compute Module 3?

What does your device tree blob file look like? I'm not 100% sure this would be required, but you may need to roll your own device tree blob: defining function = "uart1" for p32 and p33 with an 8mA drive strength and pullup on the RX pin 33. You should have something like this: [email protected] { function = ...
by JBDynamics
Sun Oct 21, 2018 2:56 pm
Forum: Compute Module
Topic: CMIO CSI IO pins
Replies: 1
Views: 3251

CMIO CSI IO pins

I am in the final stages of schematic capture for a custom CM3 Carrier board. I need a CSI port on my carrier board. My question is about the CMIO schematic, there are two pins, #17 and #18 (on the 22-pin CSI connector) that are labeled CAM0_IO0 and CAM0_IO1, respectively. There is no connection to ...
by JBDynamics
Sat Oct 13, 2018 8:09 pm
Forum: Compute Module
Topic: CM3 get more GPIO
Replies: 3
Views: 2016

Re: CM3 get more GPIO

I can verify that the HDMI, DSI, CSI, and SDX pins cannot be reallocated for any other purpose. You are limited to 46 GPIO pins and 2 1.8V GPIO on the CM3 and CM3L. All the other pins are Broadcom proprietary and locked down in the Kernel and firmware; as such there is no way to configure directiona...
by JBDynamics
Sat Oct 13, 2018 12:43 am
Forum: Compute Module
Topic: WiFi chip for Compute Module 3
Replies: 22
Views: 21542

Re: WiFi chip for Compute Module 3

I read this thread and after much further research, I decided to use a Ti WiLink8 chipset. The Jorjin WG7831DELF module is no longer available for purchase in the USA, so I looked on Ti's website, and found a few other similar modules. I decided to use a Laird LSR TiWi-BLE module, part number 450-00...
by JBDynamics
Sun Sep 30, 2018 3:41 am
Forum: Compute Module
Topic: SDIO on CM3
Replies: 3
Views: 1381

Re: SDIO on CM3

After re-reading the documentation, it is clear that SD0 does not support SDIO, and is connected to either the eMMC (CM3) or SDX_x signals (CM3L). Therefore, I can answer my own question; I'm left with using the CM3L instead of the CM3. I will be using the SDX_x pins to connect a uSD card and SD1 to...
by JBDynamics
Thu Sep 27, 2018 7:05 pm
Forum: Compute Module
Topic: SDIO on CM3
Replies: 3
Views: 1381

SDIO on CM3

I know there are some threads related to this topic, but I want to be sure I get the correct answer. I have 20 CM3 Modules that I would like to repurpose for a new project. This project requires I2C, SPI, WiFi (SDIO), Bluetooth (UART), a second UART for programming a MCU, and a SD Card for large fil...

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