Peripherals

[中文]

Drivers

In order to control the dependence of other components on drivers at a smaller granularity, the original peripheral drivers under the driver component were split into separate components:

  • esp_driver_gptimer - Driver for general purpose timers

  • esp_driver_pcnt - Driver for pulse counter

  • esp_driver_gpio - Driver for GPIO

  • esp_driver_spi - Driver for GPSPI

  • esp_driver_mcpwm - Driver for Motor Control PWM

  • esp_driver_sdmmc - Driver for SDMMC

  • esp_driver_sdspi - Driver for SDSPI

  • esp_driver_sdio - Driver for SDIO

  • esp_driver_ana_cmpr - Driver for Analog Comparator

  • esp_driver_i2s - Driver for I2S

  • esp_driver_dac - Driver for DAC

  • esp_driver_rmt - Driver for RMT

  • esp_driver_tsens - Driver for Temperature Sensor

  • esp_driver_sdm - Driver for Sigma-Delta Modulator

  • esp_driver_i2c - Driver for I2C

  • esp_driver_uart - Driver for UART

  • esp_driver_ledc - Driver for LEDC

  • esp_driver_parlio - Driver for Parallel IO

  • esp_driver_usb_serial_jtag - Driver for USB_SERIAL_JTAG

For compatibility, the original driver component is still treated as an all-in-one component by registering these esp_driver_xyz components as its public dependencies. In other words, you do not need to modify the CMake file of an existing project, but you now have a way to specify the specific peripheral driver that your project depends on.

Originally, you may have used linker.lf to specify the link ___location of some driver functions in memory space, but now, because the ___location of the driver files have been moved, you need to make changes your linker.lf file accordingly. For example, a linker.lf file with the following entries:

[mapping:my_mapping_scheme]
archive: libdriver.a
entries:
    gpio (noflash)

Should be changed to:

[mapping:my_mapping_scheme]
archive: libesp_driver_gpio.a
entries:
    gpio (noflash)

Secure Element

The ATECC608A secure element interfacing example has been moved to ESP Cryptoauthlib Repository on GitHub.

This example is also part of the esp-cryptoauthlib in the ESP Component Registry.

I2S

Due to the cumbersome usage of the secondary pointer of DMA buffer, the data field in the callback event i2s_event_data_t is deprecated, please use the newly added first-level pointer dma_buf instead.

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