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atomic14 / diy-esp32-epub-reader

An ESP32 e-reader
MIT License
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Make this Firmware also EPDiy V6 compatible #53

Closed martinberlin closed 2 years ago

martinberlin commented 2 years ago

So we can expand the use also to EPDiy supported epapers instead of only LilyGo EPD47

Linked to #52

@cgreening the core of the problem is that EPDiy cannot install I2C driver when using this repository. It does work perfectly when using EPDiy standalone examples. So there must e something in our side that is interfering with EPDiy. I suspected it was touch since it also uses I2C but there is something more than that, basically it fails instantiating the I2C driver.

cgreening commented 2 years ago

Could it be the battery pin interfering? The LilyGo has the battery voltage divider connected to GPIO_NUM_36 which is ADC1_CHANNEL_0.

  -DBATTERY_ADC_CHANNEL=ADC1_CHANNEL_0
martinberlin commented 2 years ago

Can be that is somehow bothering this pin but actually EPDiy does not uses pin 36 in V6 config: https://github.com/martinberlin/epdiy-rotation/blob/master/display_ops.h

It has to be something that is stopping EPDiy to install I2C. This are the pins used in V6 PCB

define CFG_SCL GPIO_NUM_33

define CFG_SDA GPIO_NUM_32

define CFG_INTR GPIO_NUM_35

cgreening commented 2 years ago

I've pushed up a couple of commits - might want to review them before merging. I'm happy with the rest of the changes.

I've added rtc pullups and pulldowns which should hopefully fix the instant wakeup - on the Lilygo board there are external pullups so we didn't notice this before.

And I've added code to detect when the display rehydrate fails and force a redraw on the epublist. I think this should not be needed when reading as it doesn't assume anything is already on the screen when it draws.

martinberlin commented 2 years ago

Hi @cgreening pulled your update and tried again with -D BUTONS_ACTIVE_LEVEL=0

It also still deepsleeps for one second and wakes up. I must say that I noticed also that the GPIOs are extreme sensible, even if active level=1 I just get the cable touching (Without even putting high at 3.3 v) and it already presses the button.

I (80882) EPD: Buffer saved 0
I (80882) EPD: Dehydrated EPD
I (80882) SPIFFS: SPIFFS unmounted
I (80882) main: Entering deep sleep
ets Jun  8 2016 00:22:57

rst:0x5 (DEEPSLEEP_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:7152
load:0x40078000,len:14760
load:0x40080400,len:3728
entry 0x40080678
I (27) boot: ESP-IDF 4.3.0 2nd stage bootloader
I (27) boot: compile time 17:54:59
I (27) boot: chip revision: 1

Good thing is that I can use it active on high, no problem and on LilyGo EPD47 still seems to run correctly.

And I've added code to detect when the display rehydrate fails and force a redraw on the epublist. I think this should not be needed when reading as it doesn't assume anything is already on the screen when it draws.

This also works correctly! Nice update

cgreening commented 2 years ago

Let’s stick with the active high then - we can revisit if it starts breaking on another board :)

On Mon, Oct 25, 2021 at 17:01, Martin @.***> wrote:

Hi @cgreening https://github.com/cgreening pulled your update and tried again with -D BUTONS_ACTIVE_LEVEL=0

It also still deepsleeps for one second and wakes up. I must say that I noticed also that the GPIOs are extreme sensible, even if active level=1 I just get the cable touching (Without even putting high at 3.3 v) and it already presses the button.

I (80882) EPD: Buffer saved 0 I (80882) EPD: Dehydrated EPD I (80882) SPIFFS: SPIFFS unmounted I (80882) main: Entering deep sleep ets Jun 8 2016 00:22:57

rst:0x5 (DEEPSLEEP_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0030,len:7152 load:0x40078000,len:14760 load:0x40080400,len:3728 entry 0x40080678 I (27) boot: ESP-IDF 4.3.0 2nd stage bootloader I (27) boot: compile time 17:54:59 I (27) boot: chip revision: 1

Good thing is that I can use it active on high, no problem and on LilyGo EPD47 still seems to run correctly.

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