Rene Stange

Thanks! The file _lib/font.h_ contains a "Latin 1" font for the character codes 0x21 to 0xFF (16 bytes (= pixel lines) per character, 1 byte (= 8 pixels) per line)....

The signals on a RPi Zero with your modifications to *sample/23-spisimple* using SPI0 look like this:  Using SPI1 (AUX) they look like this:  Despite a small delay before...

I got the MCP3008 today. Unfortunately I cannot reproduce your problem with SPI1 (AUX). Using a RPi Zero with *sample/23-spisimple* with these modifications: * Enable #define USE_SPI_MASTER_AUX * #define TEST_DATA_LENGTH...

There is a new driver class `CMCP300X` and a sample program especially for the MCP3004/3008 on the *develop* branch in [addon/sensor](https://github.com/rsta2/circle/tree/develop/addon/sensor). It works well using the SPI0 and SPI1 (AUX)...

Thanks for responding. I think, I will keep this issue open for the case, that somebody has a similar problem.

Unfortunately this is currently not planned. The problem is, that the USB host controller drivers do not support isochronous USB transfers. I thought about dealing with this, when I have...

@mikeoliphant I think, this library is Linux based, not an USB driver itself. Yes, there is the dwc_otg Linux kernel driver, probably the only reference for this purpose. I analyzed...

I2S input support has been implemented on the *develop* branch. There is a test program *i2s-input* in the new *test/* subdirectory, which receives I2S data (24-bit, 2 channels) and sends...

Thanks for info. I will have a look on it.

As I see it, the referenced project contains an I2S to USB audio converter, which runs on the Raspberry Pi Pico. It cannot be ported to Circle.