Lup Yuen Lee 李立源 @lupyuen@qoto.org

#BL602 SPI DMA uses simple Interrupt Handlers .... Simpler than I2C! Let's experiment with SPI DMA on BME280

https://github.com/lupyuen/bl_iot_sdk/blob/spi/components/hal_drv/bl602_hal/hal_spi.c#L749-L794

#BL602 SPI DMA ... Lets you specify a Linked List of Transmit / Receive operations ... That will be executed by the DMA Controller

https://github.com/lupyuen/bl_iot_sdk/blob/master/components/hal_drv/bl602_hal/hal_spi.c#L115

MapLibre launches as official #OpenSource successor to #Mapbox GL JS

https://wptavern.com/maplibre-launches-as-official-open-source-successor-to-mapbox-gl-js

We'll let #BL602 talk simple SPI to BME280 first ... Before talking seriously to ST7789

https://cdn.sparkfun.com/assets/learn_tutorials/4/1/9/BST-BME280_DS001-10.pdf

Yep #BL602 SPI is copy pasta from I2C ... Even the Register Address. Very nice! 👍

https://github.com/bouffalolab/bl_docs/tree/main/BL602_RM/en

#BL602 SPI Register Fields look similar to I2C too

https://github.com/bouffalolab/bl_docs/tree/main/BL602_RM/en

#BL602 SPI Registers are remarkably similar to I2C Registers ... So I can reuse my I2C code for SPI 🤔

https://github.com/bouffalolab/bl_docs/tree/main/BL602_RM/en

Raspberry Pi Pico also uses the old SPI terms

https://raspberrypi.github.io/pico-sdk-doxygen/group__hardware__spi.html#ga127e4bf0fc1d7d271d2e9160c6e3b722

...Wait it's still using the old terms. Should be renamed as "Controller" and "Peripheral", according to the guidelines:

https://www.oshwa.org/a-resolution-to-redefine-spi-signal-names/

#BL602 uses the new SPI Pin Names ... No more MOSI and MISO 👍

https://github.com/bouffalolab/bl_docs/tree/main/BL602_RM/en

Maybe someday #BL602 can talk to ST7789 Display via #FPGA?

We should implement #LVGL as a Wire Protocol between BL602 and FPGA 🤔

#nRF9160 Feather with Arm Cortex-M33, #NBIoT and CAT M1 LTE for $79

https://store.groupgets.com/products/nrf9160-feather

Run GQRX #SDR with RTL-SDR on #PinePhone

https://www.rtl-sdr.com/installing-and-using-rtl-sdr-and-gqrx-on-a-pinephone/

...Aha it's a Copy-Paste Bug

https://github.com/bouffalolab/bl_docs/tree/main/BL602_RM/en

#BL602 SPI ... Uses UART for DMA? 🤔

https://github.com/bouffalolab/bl_docs/tree/main/BL602_RM/en