Dobrica Pavlinušić's random unstructured stuff: esp8089 https://saturn.ffzg.hr/rot13/ 2019-07-04T07:18:10Z esp8089 <div>Creator: Dobrica Pavlinušić</div><hr/><div class="wiki"> <p> use <a href="https://saturn.ffzg.hr/rot13/index.cgi?esp8266" title="(57 months) toc links http www.esp8266.com https github.com esp8266 esp8266-wiki wiki http www.electrodragon.co...">esp8266</a> module over sdio on <a href="https://saturn.ffzg.hr/rot13/index.cgi?cubieboard" title="(83 months) image cubieboard-ir-module.png file cubieboard_schematic_2012-08-08.pdf file BreadBoard V1.0 03-25 ...">cubieboard</a> as wifi card</p> <div class="nlw_phrase"><table class="wafl_container"> <tr> <td> <div class="wafl_box"> <div class="wafl_titlebox"> <div class="wafl_title"> Contents: [Dobrica Pavlinušić's random unstructured stuff] </div> </div> <div class="wafl_items"> <div class="wiki"> <ul> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#links">Dobrica Pavlinušić's random unstructured stuff (links)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] links} --></span></li> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#setup">Dobrica Pavlinušić's random unstructured stuff (setup)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] setup} --></span></li> <ul> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#cubieboard_pinout">Dobrica Pavlinušić's random unstructured stuff (cubieboard pinout)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] cubieboard pinout} --></span></li> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#esp_201_pinout_from_top">Dobrica Pavlinušić's random unstructured stuff (ESP-201 pinout from top)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] ESP-=201 pinout from top} --></span></li> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#ch_en_mapping_to_gpio_pin">Dobrica Pavlinušić's random unstructured stuff (CH_EN mapping to GPIO pin)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] CH_EN mapping to GPIO pin} --></span></li> </ul> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#additional_components">Dobrica Pavlinušić's random unstructured stuff (additional components)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] additional components} --></span></li> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#clear_the_qe_quad_enable_bit_in_the_sreg2_of_a_w25q40bv_or_similar">Dobrica Pavlinušić's random unstructured stuff (clear the QE (quad enable) bit in the sreg2 of a W25Q40BV or similar)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] clear the QE (quad enable) bit in the sreg2 of a W25Q40BV or similar} --></span></li> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#bootloader">Dobrica Pavlinušić's random unstructured stuff (bootloader)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] bootloader} --></span></li> <ul> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#setup_boudrate_to_74880">Dobrica Pavlinušić's random unstructured stuff (setup boudrate to 74880)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] setup boudrate to 74880} --></span></li> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#boot_modes">Dobrica Pavlinušić's random unstructured stuff (boot modes)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] boot modes} --></span></li> <ul> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#io15_3v3">Dobrica Pavlinušić's random unstructured stuff (IO15 -&gt; 3V3)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] IO15 -=> 3V3} --></span></li> <li><span class="nlw_phrase"><a title="section link" href="https://saturn.ffzg.hr/rot13/index.cgi?dobrica_pavlinu%C5%A1i%C4%87_s_random_unstructured_stuff#io15_gnd">Dobrica Pavlinušić's random unstructured stuff (IO15 -&gt; GND)</a><!-- wiki: {link: [Dobrica Pavlinušić's random unstructured stuff] IO15 -=> GND} --></span></li> </ul></ul></ul> </div> </div> </div> </td> </tr> </table> <!-- wiki: {toc: } --></div><br /><br /><h1 id="links">links</h1> <p> &nbsp;&nbsp;&nbsp;&nbsp;<a target="_blank" title="(external link)" href="https://hackaday.io/project/8678-rpi-wifi-hat">https://hackaday.io/project/8678-rpi-wifi-hat</a><br /> &nbsp;&nbsp;&nbsp;&nbsp;<a target="_blank" title="(external link)" href="https://github.com/al177/esp8089">https://github.com/al177/esp8089</a></p> <h1 id="setup">setup</h1> <h2 id="cubieboard_pinout">cubieboard pinout</h2> <pre> root@cubieboard:/home/dpavlin# cat mmc3-sdio.txt 22 PI4 2 1 2 [mmc mmc3] SCD3_CMD 24 PI5 2 1 2 [mmc mmc3] SCD3_CLK 26 PI6 2 1 2 [mmc mmc3] SCD3_D0 28 PI7 2 1 2 [mmc mmc3] SCD3_D1 30 PI8 2 1 2 [mmc mmc3] SCD3_D2 32 PI9 2 1 2 [mmc mmc3] SCD4_D3 </pre> <br /><h2 id="esp_201_pinout_from_top">ESP-201 pinout from top</h2> <pre> 15 IO0 13 IO15 14 IO2 12 IO13 18 D2 GPIO9 10 IO12 21 CLK GPIO6 9 IO14 20 CMD GPIO11 8 XPD GPIO16 22 D0 GPIO7 7 CHIP_EN 23 D1 GPIO8 32 RST 19 D3 GPIO10 6 TOUT ADC 16 IO4 24 IO5 3.3V GND 3.3V GND </pre> <br /><h2 id="ch_en_mapping_to_gpio_pin">CH_EN mapping to GPIO pin</h2> <pre> PE4 &quot;132&quot; =&gt; &quot;PE4&quot;, -&gt; CHIP_EN root@cubieboard:/home/dpavlin/linux-gpio-pinout# modprobe esp8089 esp_reset_gpio=132 # PE4 [Sun Jun 30 19:19:24 2019] ***** EAGLE DRIVER VER:bdf5087c3deb***** [Sun Jun 30 19:19:24 2019] ESP8089 reset via GPIO 132 [Sun Jun 30 19:19:35 2019] esp_sdio_init ------ RETRY ------ [Sun Jun 30 19:19:35 2019] ESP8089 reset via GPIO 132 [Sun Jun 30 19:19:35 2019] ESP8089 reset via GPIO 132 [Sun Jun 30 19:19:46 2019] esp_sdio_init ------ RETRY ------ [Sun Jun 30 19:19:46 2019] ESP8089 reset via GPIO 132 [Sun Jun 30 19:19:47 2019] ESP8089 reset via GPIO 132 [Sun Jun 30 19:19:58 2019] esp_sdio_init ------ RETRY ------ [Sun Jun 30 19:19:58 2019] ESP8089 reset via GPIO 132 [Sun Jun 30 19:19:58 2019] ESP8089 reset via GPIO 132 [Sun Jun 30 19:20:09 2019] esp_sdio_init ------ RETRY ------ [Sun Jun 30 19:20:09 2019] ESP8089 reset via GPIO 132 modprobe: ERROR: could not insert 'esp8089': No such device [Sun Jun 30 19:20:10 2019] eagle sdio can not power up! </pre> <br /><h1 id="additional_components">additional components</h1> <p> <a target="_blank" title="(external link)" href="https://hackaday.io/project/8678-rpi-wifi/details">https://hackaday.io/project/8678-rpi-wifi/details</a></p> <p> missing 200 ohm resistors on sdio lines</p> <p> 4.7k pullup on CH_PD <a target="_blank" title="(external link)" href="https://github.com/al177/esp8089/issues/4">https://github.com/al177/esp8089/issues/4</a></p> <p> rpi needs dtoverlay=sdio,poll_once=false</p> <p> it's still not clear to me do I have to remove spi flash or not</p> <p> newer project with simpler overview</p> <ul> <li><a target="_blank" title="(external link)" href="https://hackaday.io/project/12980-pi2wifi">https://hackaday.io/project/12980-pi2wifi</a></li> <li><a target="_blank" title="(external link)" href="https://sites.google.com/site/mincepi/pi2wifi">https://sites.google.com/site/mincepi/pi2wifi</a></li> </ul> <p> it suggests 33 ohm resistors on sdio, includes dts overlay)</p> <p> <a target="_blank" title="(external link)" href="https://hackaday.io/project/8678/instructions">https://hackaday.io/project/8678/instructions</a> also suggest 33 ohm resistors...</p> <h1 id="clear_the_qe_quad_enable_bit_in_the_sreg2_of_a_w25q40bv_or_similar">clear the QE (quad enable) bit in the sreg2 of a W25Q40BV or similar</h1> <p> <a target="_blank" title="(external link)" href="https://github.com/jacksonliam/rpi-bitbang-spiflash">https://github.com/jacksonliam/rpi-bitbang-spiflash</a></p> <h1 id="bootloader">bootloader</h1> <h2 id="setup_boudrate_to_74880">setup boudrate to 74880</h2> <span class="nlw_phrase"><a href="https://saturn.ffzg.hr/rot13/index.cgi/anyboud.c?action=attachments_download;page_name=esp8089;id=20190704060856-0-15819">anyboud.c</a><!-- wiki: {file: anyboud.c} --></span><br /><br /><p> <a target="_blank" title="(external link)" href="https://gist.githubusercontent.com/sentinelt/3f1a984533556cf890d9/raw/8a35958138b1167fce5c2301a73e2fe06aeb08d8/gistfile1.c">https://gist.githubusercontent.com/sentinelt/3f1a984533556cf890d9/raw/8a35958138b1167fce5c2301a73e2fe06aeb08d8/gistfile1.c</a></p> <p> You have to first open terminal in some valid baud rate</p> <pre> root@cubieboard:~# microcom -p /dev/ttyS1 </pre> <br /><p> and then in another terminal force new speed for port with:</p> <pre> dpavlin@cubieboard:~/anybaud$ ./anyboud /dev/ttyS1 74880 Changed successfully. </pre> <br /><h2 id="boot_modes">boot modes</h2> <p> <a target="_blank" title="(external link)" href="https://github.com/esp8266/esp8266-wiki/wiki/Boot-Process#esp-boot-modes">https://github.com/esp8266/esp8266-wiki/wiki/Boot-Process#esp-boot-modes</a></p> <p> The Espressif code can boot in different modes, selected on power-up based on GPIO pin levels. (MTDO is equivalent to GPIO15).</p> <table style="border-collapse: collapse;" class="formatter_table"> <tr> <td style="border: 1px solid black;padding: .2em;">MTDO</td> <td style="border: 1px solid black;padding: .2em;">GPIO0</td> <td style="border: 1px solid black;padding: .2em;">GPIO2</td> <td style="border: 1px solid black;padding: .2em;">Mode</td> <td style="border: 1px solid black;padding: .2em;">Description</td> </tr> <tr> <td style="border: 1px solid black;padding: .2em;">L</td> <td style="border: 1px solid black;padding: .2em;">L</td> <td style="border: 1px solid black;padding: .2em;">H</td> <td style="border: 1px solid black;padding: .2em;">UART</td> <td style="border: 1px solid black;padding: .2em;">Download code from UART</td> </tr> <tr> <td style="border: 1px solid black;padding: .2em;">L</td> <td style="border: 1px solid black;padding: .2em;">H</td> <td style="border: 1px solid black;padding: .2em;">H</td> <td style="border: 1px solid black;padding: .2em;">Flash</td> <td style="border: 1px solid black;padding: .2em;">Boot from SPI Flash</td> </tr> <tr> <td style="border: 1px solid black;padding: .2em;">H</td> <td style="border: 1px solid black;padding: .2em;">x</td> <td style="border: 1px solid black;padding: .2em;">x</td> <td style="border: 1px solid black;padding: .2em;">SDIO</td> <td style="border: 1px solid black;padding: .2em;">Boot from SD-card</td> </tr> </table> <br /><p> In the bootup message 'boot mode:(x,y)' three low bits of x are {MTDO, GPIO0, GPIO2}.</p> <h3 id="io15_3v3">IO15 -&gt; 3V3</h3> <p> My guess from espressif powerpoint this is sdio boot mode (and it doesn't work for me right now)</p> <pre> ets Jan 8 2013,rst cause:1, boot mode:(7,7) waiting for host </pre> <br /><h3 id="io15_gnd">IO15 -&gt; GND</h3> <p> According to hackaday thread, this is correct way to force SDIO mode, serial output is:</p> <pre> ets Jan 8 2013,rst cause:1, boot mode:(3,7) load 0x40100000, len 31020, room 16 ets Jan 8 2013,rst cause:1, boot mode:(3,7) </pre> <br /><p> This seems like loading from spi flash to me. If I don't touch kernel module, but just toggle CH_EN pin</p> <pre> root@cubieboard:/home/dpavlin# cat esp-reset.sh #!/bin/sh -xe cd /sys/class/gpio/ echo 132 &gt; export echo out &gt; gpio132/direction echo 0 &gt; gpio132/value echo 1 &gt; gpio132/value echo 132 &gt; unexport root@cubieboard:/home/dpavlin# </pre> <br /><p> I get full bootloader output:</p> <pre> ets Jan 8 2013,rst cause:1, boot mode:(3,7) load 0x40100000, len 31020, room 16 tail 12 chksum 0x79 ho 0 tail 12 room 4 load 0x3ffe8000, len 2888, room 12 tail 12 chksum 0x6a ho 0 tail 12 room 4 load 0x3ffe8b50, len 14864, room 12 tail 4 chksum 0x45 csum 0x45 </pre> <br /><p> It seems that esp tries to load first part, but fails and kernel module toggle CH_PD and resets it.<br /> Time to try soldering resistors between 200 and 33 ohms I guess...</p> </div> <hr/><div>Attachments: anyboud.c</div> https://saturn.ffzg.hr/rot13/index.cgi?esp8089 Dobrica Pavlinušić 2019-07-04T07:18:10Z