Make 1bit SDMMC interface work #4020
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
According to ESP-IDF API https://github.com/espressif/esp-idf/blob/dc14d027cec49260b78efb1c3724b1710f2f3ec0/docs/en/api-reference/peripherals/sdmmc_host.rst : "To configure the bus width, set the width field of :cpp:class:`sdmmc_slot_config_t`. For example, to set 1-line mode: sdmmc_slot_config_t slot = SDMMC_SLOT_CONFIG_DEFAULT(); slot.width = 1; "
|
One of our employees tried to do it here: |
|
take a look here :) https://github.com/espressif/arduino-esp32/blob/master/variants/esp32-evb/pins_arduino.h#L31 this is olimex EVB. Also 1bit SDMMC |
I believe that the issue is not properly and clearly explained in the post. I believe that the issue is:
|
|
@DanKoloff killing me with this nickname :D alright, clear! Merging.. |
|
@cyberman54 Thanks for the contribution |
vvhh2002
pushed a commit
to vvhh2002/arduino-esp32
that referenced
this pull request
Jun 15, 2020
* master: M5Stack's product offering includes various ESP32-based camera devices. (espressif#4030) Fix for issue 3974 m_connectedCount incorrectly decremented when no connection exists Add a new board of KITS for IoT education (espressif#3703) update M5Camera pins (espressif#4021) Update SD_MMC.cpp (espressif#4020) Added missing wifi_provisioning dependency. (espressif#4003) HardwareSerial bugfix & improvement (espressif#3713) Allow using custom linker scripts (espressif#3735) Add M5Stack-ATOM Board (espressif#3883) Minor modifications in provisioning (espressif#3919) Add support of unified provisioning to Arduino Update install-platformio-esp32.sh add new board Handbit (espressif#3807) Move _STREAM_BOUNDARY before _STREAM_PART (espressif#3720) Add Senses's WEIZEN board from Senses IoT platform (espressif#3687) Revert "std::shared_ptr Memory Leak (espressif#3680)" (espressif#3682) std::shared_ptr Memory Leak (espressif#3680) Minimize HardwareSerial Receive and Transmit delays (espressif#3664) fix removeApbChangeCallback() error in spiStopBus() (espressif#3675) # Conflicts: # CMakeLists.txt
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
According to ESP-IDF API
https://github.com/espressif/esp-idf/blob/dc14d027cec49260b78efb1c3724b1710f2f3ec0/docs/en/api-reference/peripherals/sdmmc_host.rst :
"To configure the bus width, set the width field of :cpp:class:
sdmmc_slot_config_t. For example, to set 1-line mode:sdmmc_slot_config_t slot = SDMMC_SLOT_CONFIG_DEFAULT();
slot.width = 1;
"
E.g. necessary on Olimex ESP32-POE, because this board is using GPIO12 for other purpose (switching PoE power). GPIO12 ususally is used in 4 bit SDMMC interface. Thus, should be disabled in 1bit mode to avoid conflicts if GPIO12 is used for other purpose.