Lup Yuen Lee 李立源 @lupyuen@qoto.org

#BL604 doesn't seem to be transmitting anything to ST7789 on SPI MOSI (GPIO 17) ... Let's try a different pin for MOSI

ST7789's CS Pin (GPIO 20) is not exposed on #PineDio Stack's GPIO Connector ... So we use GPIO 5 to Shadow the CS Pin

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/display.c#L504-L534

#PineDio Stack SPI Port is exposed on the GPIO Connector ... So we connect our Logic Analyser there

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/display.h#L48-L58

Let's connect a Logic Analyser to #PineDio Stack #BL604 ... And troubleshoot the SPI connection to ST7789 Display

@jpaul Settings -> General -> Language and Region. Seems to run slightly faster now.

"Yoshizawa–Randlett system is a diagramming system used to describe the folds of origami models"

https://en.m.wikipedia.org/wiki/Yoshizawa%E2%80%93Randlett_system

Old iPhones become faster if you change the region to France

https://www.gizchina.com/2021/08/23/old-iphones-become-faster-if-you-change-the-region-to-france/

Reliable Firmware Updates for the Information-Centric #IoT

https://arxiv.org/abs/2108.09555

Verifying the packed #ST7789 9-bit data with a spreadsheet ... Our packing is indeed correct 🤔

https://docs.google.com/spreadsheets/d/1Qy0MjU79s__wzTAFwpTYUUIzLWcrFnKCrvvo_rHamiE/edit?usp=sharing

Chip shortage set to worsen as Covid-19 rampages through Malaysia (STMicro, NXP, Infineon)

https://www.straitstimes.com/asia/se-asia/chip-shortage-set-to-worsen-as-covid-19-rampages-through-malaysia

#PineDio Stack SPI Port is exposed on the GPIO Connector ... Shall we connect a Logic Analyser to troubleshoot #ST7789 Display? 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/demo.c#L227-L2661

Since our #ST7789 Driver Code is in C, let's test it locally on Linux!

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/display.c

We're sending SPI data to #ST7789 in multiples of 9 Bytes ... Due to the 9-bit packing

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/demo.c#L227-L2661

Packed #ST7789 9-bit data looks correct ... But nothing appears on #PineDio Stack Display 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/demo.c#L227-L2661

Now we test the code that packs #ST7789 9-bit data into 8-bit SPI

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/display.c#L338-L404

How we pack 9-bit #ST7789 data ... Into 8-bit SPI

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/display.c#L299-L406

"Could #PinePhone be a step towards semi-modular smartphones?"

https://www.reddit.com/r/PINE64official/comments/pa3uvm/do_you_think_that_pinephone_could_be_a_step/?utm_medium=android_app&utm_source=share

"If I get a #PinePhone now, will I miss out on any hardware changes?"

https://www.reddit.com/r/PINE64official/comments/pa2kr4/if_i_get_a_pinephone_now_will_i_miss_out_an_any/?utm_medium=android_app&utm_source=share

"Loon"? Oh dear...

https://edition.cnn.com/2021/08/23/politics/kamala-harris-singapore-afghanistan/index.html