Hi there.
I was trying to flash Snips Audio Server as described here: Matrix Voice as a standalone Mic for Snips That did not work - I only got mic_energy sample to work. A day later I had to restart from scratch (same pi + fresh rasbian + toolchain as described here https://www.hackster.io/matrix-labs/get-started-w-esp32-on-the-matrix-voice-d01e0d) No matter what I do, I don’t have /dev/ttyS0 anymore. The voice is still flashed (and working) with mic_energy sample. Whats going wrong here?
pi@raspberrypi:~ $ sudo dpkg -l | grep matrixio
ii libmatrixio-creator-hal:armhf 0.3.3 armhf Hardware Abstraction Layer for MATRIX.
ii matrixio-creator-init 0.4.9 armhf Install scripts that can program the MATRIX Creator FPGA and SAM3 IMU.
ii matrixio-openocd 1.0.1 armhf Open on-chip JTAG debug solution for ARM and MIPS systems
ii matrixio-xc3sprog 1.1.1 armhf Spartan3, XCF and CPLD JTAG programmer and other utilities.
pi@raspberrypi:~ $ sudo dpkg -l | grep matrix
ii libmatrixio-creator-hal:armhf 0.3.3 armhf Hardware Abstraction Layer for MATRIX.
ii matrixio-creator-init 0.4.9 armhf Install scripts that can program the MATRIX Creator FPGA and SAM3 IMU.
ii matrixio-openocd 1.0.1 armhf Open on-chip JTAG debug solution for ARM and MIPS systems
ii matrixio-xc3sprog 1.1.1 armhf Spartan3, XCF and CPLD JTAG programmer and other utilities.
pi@raspberrypi:~ $ lsmod | grep matrix
<nothing>
pi@raspberrypi:~ $ /usr/share/matrixlabs/matrixio-devices/fpga_info
can't open any device
FPGA IDENTIFY = 0
FPGA VERSION = 10c4c
pi@raspberrypi:~ $ sudo /usr/share/matrixlabs/matrixio-devices/matrix-init.bash
can't open any device
**** MATRIX Voice FPGA Software has been updated!
can't open any device