mantabernd

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  1. Hi, I'm looking for a working OS Image for Nano Pi Neo Air for using I2S, SPI and Bluetooth (AP6212). Is there a release I can use "out of the box" for this? Regards Bernhard
  2. Hi, I'm using my NanoPi NeoAir as a bluetooth streaming sink and as a webserver for several configurations and monitoring of the device. Bluetooth works fine as long as I don't disable the powersafe mode of wifi. Even in powersafe mode the bluetooth performance is not the best. If I disable wifi at all the bluetooth performance is great. My system is: Ubuntu 16.04.3 LTS 4.11.2 iwconfig: wlan0 IEEE 802.11 ESSID:"Teebeutel" Mode:Managed Frequency:2.412 GHz Access Point: 2C:41:38:FB:D7:30 Bit Rate=54 Mb/s
  3. Got anybody here a idea where the 1500000 bit/s come from? It's not a regular baud rate and AP6212a datasheet tells me that this chip can handle up to 3 Mbps. So why can't I use 3000000 bit/s? Regards
  4. I found a patch regarding this: https://github.com/armbian/build/blob/01a34e94e2f618f805ead41679695fb09490add0/patch/kernel/sun8i-dev/nanopi-neo-air-wireless-and-dvfs.patch Can you please tell me how to install this patch?
  5. Maybe it's already enough to set GPIOA7 and GPIOA8 to a high level... Unfortunately I can't find any information how to set them as a output with pullup. Do you have any idea how to change the .dts file from my prev post?
  6. I guess I need to create my own overlay, or? I found this .dts file for uart3 on Allwinner H3: /dts-v1/; /plugin/; / { compatible = "allwinner,sun8i-h3"; fragment@0 { target-path = "/aliases"; __overlay__ { serial3 = "/soc/serial@01c28c00"; }; }; fragment@1 { target = <&uart3>; __overlay__ { pinctrl-names = "default"; pinctrl-0 = <&uart3_pins>; status = "okay"; }; }; }; How to insert the custom GPIOs here?
  7. I'm using Nano Pi Neo Air. AP6212a is located on ttyS3. It's working under 3.4 kernel. BT-WAKE-AP and AP-WAKE-BT is a good hint. Thank you for this! Can you tell me how I activate these pins in DT? I guess you are talking about Pins PA7 and PA8? Thanks for your help.
  8. Hi, I'm trying to use bluetooth with the Mainline 4.11.9-sun8i armbian kernel (I also tried 4.11.7-sun8i). I activated ttyS3 (uart3) in armbianEnv.txt: verbosity=1 logo=disabled console=serial overlay_prefix=sun8i-h3 rootdev=UUID=59c35982-ddad-4bf0-8b72-a8974bfe88a6 rootfstype=ext4 overlays=uart3 spi-spidev param_uart3_rtscts=1 param_spidev_spi_bus=0 Unfortunately hciconfig -a does not find any device. I already tried to set the baudrate but no chance to get bluetooth alive: service bluetooth stop rfkill unblock all echo "0" > /sy
  9. I'm glad it's working now for you. I'm still not happy with the bluetooth performance. Poor connection quality and sound streaming does not work really smooth. I'm now trying to get it done with 4.11 kernel, unfortunately the bluetoothchip is not working at all with this kernel....
  10. Thank you for your fast reply. I kinda got it working. I thought it's enough to set the uart speed once but you need to make it on every boot. So I wrote startscript what sets the uart speed to 1500000 bit/s and it's working without timeouts. It's not my goal yet because the AP6212a datasheet says that it's possible to work with 3000000 bit/s. Unfortunately I'm not able to set this speed. Furthermore Bluteooth audio streaming is not running very stable. I know it from Raspberry Pi with 4.x kernel and it was really easy and smooth. It seems that it's a problem co
  11. Good evening, I'm using a NanoPi Neo Air for streaming audio via bluetooth to a I2S sink. It's working in general but the audio data breaks away every second. It's always a on/off. I'm pretty sure it's connected to the speed between H3 - AP6212a but I'm not able to get it to work propably. I set the UART ttyS3 speed to 1500000 bit/s: My Fexedit looks like that: [bt_para] │ │bt_used = 1 │ │bt_uart_id = 3