esp-idf/components/hal
Jiang Jiang Jian 9fb1b59054 Merge branch 'bringup/esp32h2_light_sleep_for_rebase_backport_v5.1' into 'release/v5.1'
esp32h2: support light_sleep(backport v5.1)

See merge request espressif/esp-idf!24697
2023-07-12 13:39:49 +08:00
..
esp32 brownout: Disable the hardware BOD when BOD interrupt is enabled 2023-07-11 14:32:40 +08:00
esp32c2 brownout: Disable the hardware BOD when BOD interrupt is enabled 2023-07-11 14:32:40 +08:00
esp32c3 brownout: Disable the hardware BOD when BOD interrupt is enabled 2023-07-11 14:32:40 +08:00
esp32c6 Merge branch 'bringup/esp32h2_light_sleep_for_rebase_backport_v5.1' into 'release/v5.1' 2023-07-12 13:39:49 +08:00
esp32h2 Merge branch 'bringup/esp32h2_light_sleep_for_rebase_backport_v5.1' into 'release/v5.1' 2023-07-12 13:39:49 +08:00
esp32s2 brownout: Disable the hardware BOD when BOD interrupt is enabled 2023-07-11 14:32:40 +08:00
esp32s3 brownout: Disable the hardware BOD when BOD interrupt is enabled 2023-07-11 14:32:40 +08:00
include/hal Power Management: support pu xtal in light sleep for esp32h2 2023-07-11 14:53:15 +08:00
platform_port/include/hal all: Replaces memset/memcpy with hal_mem.. funcs where were used -Wstringop-overread, -Wstringop-overflow, -Warray-bounds 2022-11-30 19:22:41 +08:00
test esp32h2: add build test 2023-01-17 10:29:04 +08:00
test_apps/ecc hal/test_apps: Add no-os ecc test app 2023-03-13 16:39:46 +05:30
.build-test-rules.yml hal/test_apps: Add no-os ecc test app 2023-03-13 16:39:46 +05:30
adc_hal_common.c adc_cali: supported channel compensation of adc calibration on esp32c6 2023-07-05 12:48:11 +08:00
adc_hal.c i2s: fixed i2s_ll compiling failure under C++ evironment 2023-06-26 15:42:36 +08:00
adc_oneshot_hal.c adc: remove adc_hal_conf.h 2023-02-23 11:48:31 +08:00
aes_hal.c AES/SHA: use GDMA driver instead of LL 2021-01-19 11:02:51 +08:00
apm_hal.c apm: added support for APM on esp32c6 2023-02-10 08:18:07 +00:00
brownout_hal.c brownout: Disable the hardware BOD when BOD interrupt is enabled 2023-07-11 14:32:40 +08:00
cache_hal.c esp_mm: cache_msync API 2023-02-28 10:42:22 +08:00
CMakeLists.txt bugfix: remove the workaround implemented in MR 22773 about the lp_timer 2023-07-11 14:53:02 +08:00
ds_hal.c esp_ds: move timeout mechanism to driver layer 2021-04-22 21:07:35 +08:00
ecc_hal.c esp32h2: Add support for ECC hardware accelerator 2023-03-13 16:39:46 +05:30
ecdsa_hal.c ecdsa: Support multiple ECDSA keys 2023-04-30 11:47:35 +05:30
efuse_hal.c adc_cali: supported channel compensation of adc calibration on esp32c6 2023-07-05 12:48:11 +08:00
emac_hal.c esp_eth: possible start/stop issue fixed 2023-02-03 10:48:39 +01:00
etm_hal.c etm: added etm channel allocator 2022-11-23 15:31:33 +08:00
gdma_hal.c gdma: support IRAM interrupt 2021-11-08 16:14:51 +08:00
gpio_hal.c gpio: h2 support input hysteresis filter 2023-02-20 19:34:48 +08:00
hmac_hal.c hmac_hal: Merge hmac hal layer for different into one 2022-11-24 16:04:26 +05:30
i2c_hal_iram.c I2C: Refactor i2c hal and ll 2022-09-01 15:53:59 +08:00
i2c_hal.c I2C: Fix issue that pointer would be NULL if calls i2c_param first, 2023-01-09 10:18:03 +08:00
i2s_hal.c i2s: fixed i2s_ll compiling failure under C++ evironment 2023-06-26 15:42:36 +08:00
Kconfig spi: change linker file let spi hal able to out from iram 2023-04-26 11:15:30 +08:00
lcd_hal.c rgb_lcd: workaround pclk polarity bug by setting mo>=2 2022-07-21 13:06:09 +00:00
ledc_hal_iram.c ledc: Support gamma curve fade feature on esp32c6 and esp32h2 2023-03-10 12:42:46 +08:00
ledc_hal.c ledc: Support gamma curve fade feature on esp32c6 and esp32h2 2023-03-10 12:42:46 +08:00
linker.lf spi: change linker file let spi hal able to out from iram 2023-04-26 11:15:30 +08:00
lp_timer_hal.c Power Management: move lp_timer_hal.c to upper hal layer for esp32h2 and esp32c6 2023-07-11 14:52:46 +08:00
mcpwm_hal.c mcpwm: clean up hal driver and add doc 2022-06-02 15:01:18 +08:00
mmu_hal.c mmu: hal function to init, and hal function to unmap all 2023-03-15 10:59:20 +08:00
mpu_hal.c
parlio_hal.c driver: add parallel IO TX driver 2023-03-01 00:43:14 +00:00
pcnt_hal.c pulse_cnt: new driver for PCNT peripheral 2022-03-03 22:38:32 +08:00
README.md
rmt_hal.c rmt: support esp32c6 2022-09-17 04:56:49 +00:00
rtc_io_hal.c rtcio: support rtcio on c6 2022-12-22 14:14:38 +08:00
sdio_slave_hal.c sdio_slave: fix strict aliasing violation for sdio_ringbuf_recv() 2023-01-19 13:21:27 +07:00
sdkconfig.rename HAL: fix kconfig HAL_ASSERTION typo 2022-06-13 16:19:28 +08:00
sdm_hal.c sdm: clean up soc/hal/ll code 2022-07-20 14:59:50 +08:00
sha_hal.c AES/SHA: use GDMA driver instead of LL 2021-01-19 11:02:51 +08:00
spi_flash_encrypt_hal_iram.c spi_flash: refactoring flash encryption into new api 2021-04-25 17:09:25 +08:00
spi_flash_hal_common.inc spi_flash: bringup for esp32c6 2022-11-09 12:50:46 +08:00
spi_flash_hal_gpspi.c spi_flash(c3): add boya chip support for suspend feature 2021-01-25 11:14:06 +08:00
spi_flash_hal_iram.c esp32h2: renaming esp32h2 to esp32h4 2022-11-08 17:05:33 +08:00
spi_flash_hal.c spi_flash: bringup for esp32c6 2022-11-09 12:50:46 +08:00
spi_hal_iram.c spi_master: add feature spi periph clk source selectable 2023-01-18 15:40:12 +08:00
spi_hal.c soc: fix wrong APB_CLK_FREQ value on esp32c6 2023-01-28 06:33:23 +00:00
spi_slave_hal_iram.c spi: limit esp32 dma workaround only on esp32 2022-11-14 16:01:48 +08:00
spi_slave_hal.c spi: apply gdma allocator to SPI 2021-02-22 07:06:05 +00:00
spi_slave_hd_hal.c spi_slave: support spi slave hd append mode on chips other than s2 2023-03-21 11:30:17 +08:00
systimer_hal.c systimer: support etm event 2022-11-23 15:32:34 +08:00
timer_hal_iram.c gptimer: add API to get captured count value 2022-08-25 17:55:19 +08:00
timer_hal.c gptimer: bringup driver on esp32c6 2022-09-13 10:50:58 +08:00
touch_sensor_hal.c hal: explicitly include soc_caps.h 2021-01-07 10:13:17 +08:00
twai_hal_iram.c twai: bringup on esp32c6 2022-11-04 17:40:29 +08:00
twai_hal.c twai: Add errata workaround for listen only mode 2023-02-23 12:50:06 +08:00
uart_hal_iram.c global: fix sign-compare warnings 2021-01-12 14:05:08 +08:00
uart_hal.c uart: move frequency of clock sources out of HAL 2022-08-15 18:55:43 +00:00
usb_dwc_hal.c hal: Fix USB DWC HAL host channel halt race condition 2022-12-06 18:08:54 +08:00
usb_hal.c soc/hal: add tinyusb support esp32s3 2021-05-06 16:20:54 +08:00
usb_phy_hal.c usb: Add usb_phy driver to support operations on USB PHY 2021-09-13 12:39:56 +08:00
wdt_hal_iram.c wdt: refactor wdt codes to use unified type 2023-02-15 12:08:55 +08:00
xt_wdt_hal.c WDT: Add support for XTAL32K Watchdog timer 2021-09-02 09:09:00 +08:00

hal

The hal component provides hardware abstraction and implementation for targets supported by ESP-IDF.

include/hal

/include/hal contains header files which provides a hardware-agnostic interface to the SoC. The interface consists of function declarations and abstracted types that other, higher level components can make use of in order to have code portable to all targets ESP-IDF supports.

It contains an abstraction layer for ineracting with/driving the hardware found in the SoC such as the peripherals and 'core' hardware such as the CPU, MPU, caches, etc. It contains for the abstracted types. The abstraction design is actually two levels -- often somtimes xxx_hal.h includes a lower-level header from a xxx_ll.h, which resides in the implementation. More on this abstraction design in the hal/include/hal's Readme

target/include

Provides the implementation of the hardware-agnostic interface in the abstraction. Target-specific subdirectories exist for wildly different implementations among targets; while code that are common/very similar might be placed in the top-level of /<target>/include, using some amount of conditional preprocessors. It is up to the developers' discretion on which strategy to use. Code usually reside in source files with same names to header files whose interfaces they implement, ex. xxx_hal.c for xxx_hal.h.

As mentioned previously, the lower-level abstraction header xxx_ll.h resides in this directory, since they contain hardware-specific details. However, what these can do is provide some abstraction among implementations, so that more code can be moved to the common, non-target-specific subdirectories.

This can also contain target-specific extensions to the HAL headers. These target-specific HAL headers have the same name and include the abstraction layer HAL header via include_next. These extensions might add more function declarations or override some things using macro magic.