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da91dbccfa
esp-idf/components/hal/include/hal
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Darian Leung da91dbccfa usb_host: Rename struct/ll/hal files to use "usb_dwc" prefix 
This commit updates the DWC_OTG based struct/ll/hal file names to
use the prefix "usb_dwc". This naming scheme reduces ambiguity if
another USB controller implementation is added.

As a result, "hcd.c" has been renamed to "hcd_dwc.c"
2023-01-09 17:47:42 +08:00
..
adc_hal_common.h esp_adc: new esp_adc component and adc drivers 2022-07-15 18:31:00 +08:00
adc_hal.h esp_adc: new esp_adc component and adc drivers 2022-07-15 18:31:00 +08:00
adc_oneshot_hal.h esp_adc: new esp_adc component and adc drivers 2022-07-15 18:31:00 +08:00
adc_types_private.h esp_adc: new esp_adc component and adc drivers 2022-07-15 18:31:00 +08:00
adc_types.h esp_adc: add adc ulp mode disable enum 2022-08-23 10:48:15 +08:00
aes_hal.h AES/SHA: use GDMA driver instead of LL 2021-01-19 11:02:51 +08:00
aes_types.h AES: refactor and add HAL layer 2020-12-10 09:04:47 +00:00
brownout_hal.h spi_flash: Making XMC flash works more stable when brownout detected 2022-06-02 10:38:55 +08:00
cache_hal.h cache/mmu: implememnt cache and mmu hal APIs in bootloader 2022-03-11 22:43:11 +08:00
cache_types.h cache/mmu: implememnt cache and mmu hal APIs in bootloader 2022-03-11 22:43:11 +08:00
dac_hal.h hal: added HAL_ASSERT 2021-06-22 11:28:01 +08:00
dac_types.h driver: fix public header exceptions for driver 2022-07-22 00:12:36 +00:00
dma_types.h C/Cxx: unify static assertions with the macro ESP_STATIC_ASSERT 2022-12-19 15:06:15 +01:00
ds_hal.h Digital Signature support for S3 2021-09-02 11:59:24 +05:30
ecc_hal.h esp32c2/hal: Added ECC HAL layer 2022-03-08 14:05:23 +00:00
ecc_types.h esp32c2/hal: Added ECC HAL layer 2022-03-08 14:05:23 +00:00
efuse_hal.h efuse: Adds major and minor versions and others 2022-07-05 14:38:27 +08:00
emac_hal.h Merge branch 'feature/emac_buff_v5.0' into 'release/v5.0' 2022-12-21 23:35:30 +08:00
esp_flash_err.h hal: extract hal component from soc component 2020-09-01 13:25:32 +08:00
eth_types.h esp_eth: Update esp32's EMAC API to decouple driver and vendor config 2022-02-14 16:17:29 +00:00
gdma_hal.h gdma: support IRAM interrupt 2021-11-08 16:14:51 +08:00
gpio_hal.h esp_hw_support/sleep: fix current leakage when hold digital io during deep sleep 2022-12-02 12:24:52 +00:00
gpio_types.h gpio: Fix interrupt lost issue 2022-09-08 11:52:25 +08:00
i2c_hal.h I2C: Fullfill the I2C clock tree, and support 26M XTAL on ESP32-C2 2022-07-19 11:41:42 +08:00
i2c_types.h I2C: Fullfill the I2C clock tree, and support 26M XTAL on ESP32-C2 2022-07-19 11:41:42 +08:00
i2s_hal.h i2s: fixed typo 'philip' 2022-11-22 15:59:51 +08:00
i2s_types.h i2s: add slot sequence table 2022-07-21 15:52:39 +08:00
lcd_hal.h rgb_lcd: workaround pclk polarity bug by setting mo>=2 2022-07-21 13:06:09 +00:00
lcd_types.h rgb_lcd: support yuv converter 2022-09-27 14:32:04 +08:00
ledc_hal.h ledc: Provide support for esp32c2 and esp32h2 2022-04-14 08:15:14 +00:00
ledc_types.h ledc: Provide support for esp32c2 and esp32h2 2022-04-14 08:15:14 +00:00
mcpwm_hal.h mcpwm: clean up hal driver and add doc 2022-06-02 15:01:18 +08:00
mcpwm_types.h driver: fix public header exceptions for driver 2022-07-22 00:12:36 +00:00
memprot_types.h Clean IRAM and DRAM address space conversion macros 2022-07-29 17:07:39 +08:00
mmu_hal.h MMU: Add configurable mmu page size support on ESP32C2 2022-06-08 19:34:31 +08:00
mmu_types.h mmu: driver framework, for vaddr maintenance 2022-08-27 16:05:51 +08:00
mpu_hal.h Whitespace: Automated whitespace fixes (large commit) 2020-11-11 07:36:35 +00:00
mpu_types.h hal: explicitly include soc_caps.h 2021-01-07 10:13:17 +08:00
pcnt_hal.h pulse_cnt: new driver for PCNT peripheral 2022-03-03 22:38:32 +08:00
pcnt_types.h pulse_cnt: new driver for PCNT peripheral 2022-03-03 22:38:32 +08:00
readme.md hal: extract hal component from soc component 2020-09-01 13:25:32 +08:00
rmt_hal.h driver_ng: implement new rmt driver 2022-05-07 10:34:50 +00:00
rmt_types.h sdm: clean up soc/hal/ll code 2022-07-20 14:59:50 +08:00
rtc_hal.h esp_hw_‎support/sleep: ‎fix cannot lightsleep again after a wakeup from ULP 2022-05-12 17:57:08 +08:00
rtc_io_hal.h G0: RISC-V targets have now an independent G0 layer 2022-06-14 15:00:53 +08:00
rtc_io_types.h Whitespace: Automated whitespace fixes (large commit) 2020-11-11 07:36:35 +00:00
sdio_slave_hal.h sdio_slave: allow disabling highspeed mode 2022-10-01 01:53:28 +08:00
sdio_slave_ll.h Whitespace: Automated whitespace fixes (large commit) 2020-11-11 07:36:35 +00:00
sdio_slave_types.h sdio_slave: allow disabling highspeed mode 2022-10-01 01:53:28 +08:00
sdm_hal.h sdm: clean up soc/hal/ll code 2022-07-20 14:59:50 +08:00
sdm_types.h sdm: clean up soc/hal/ll code 2022-07-20 14:59:50 +08:00
sha_hal.h AES/SHA: use GDMA driver instead of LL 2021-01-19 11:02:51 +08:00
sha_types.h esp8684: rename target to esp32c2 2022-01-19 11:08:57 +08:00
spi_flash_encrypt_hal.h spi_flash: refactoring flash encryption into new api 2021-04-25 17:09:25 +08:00
spi_flash_hal.h C/Cxx: unify static assertions with the macro ESP_STATIC_ASSERT 2022-12-19 15:06:15 +01:00
spi_flash_types.h spi_flash: refactor the spi_flash clock configuration, and add support for esp32c2 2022-04-26 15:22:37 +08:00
spi_hal.h spi: support spi on 8684 2022-01-12 11:30:29 +08:00
spi_slave_hal.h spi: limit esp32 dma workaround only on esp32 2022-12-05 12:10:45 +08:00
spi_slave_hd_hal.h spi_slv_hd: add hal_trans_finish comments for clarifying risk 2021-02-24 12:01:31 +08:00
spi_types.h SPI: Fixed Quad SPI wrong dummy cycle issue on ESP32C2/ESP32C3/ESP32S3 and put get-command/dummy-bits functions in spi_ll.h 2022-09-07 18:48:05 +08:00
systimer_hal.h systimer: refactor hal to accomodate more xtal choices 2022-07-25 16:08:52 +08:00
systimer_types.h C/Cxx: unify static assertions with the macro ESP_STATIC_ASSERT 2022-12-19 15:06:15 +01:00
temperature_sensor_types.h sdm: clean up soc/hal/ll code 2022-07-20 14:59:50 +08:00
timer_hal.h gptimer: clean up hal and ll for driver-ng 2021-10-20 18:40:08 +08:00
timer_types.h clk_tree: added default clock source for peripheral 2022-04-14 15:44:56 +08:00
touch_sensor_hal.h rtc_clk: Clean up some clock related enum and macro in soc/rtc.h, replace with new ones in 2022-05-24 22:59:41 +08:00
touch_sensor_types.h soc: don't expose unstable soc header files in public api 2022-01-06 23:10:22 +08:00
twai_hal.h twai: Fix twai_ll_parse_frame_buffer() typo 2022-04-22 15:25:39 +08:00
twai_types.h TWAI: Fix incorrect configuration initializers for low speed bit rates 2021-07-19 14:27:39 +08:00
uart_hal.h uart: move frequency of clock sources out of HAL 2022-08-22 14:28:12 +08:00
uart_types.h driver: remove deprecated code 2022-05-19 11:31:53 +08:00
uhci_types.h examples: added support of ESP32-S3 chip in controller_hci_uart example 2021-08-26 14:24:32 +08:00
usb_dwc_hal.h usb_host: Rename struct/ll/hal files to use "usb_dwc" prefix 2023-01-09 17:47:42 +08:00
usb_dwc_ll.h usb_host: Rename struct/ll/hal files to use "usb_dwc" prefix 2023-01-09 17:47:42 +08:00
usb_hal.h hal: extract hal component from soc component 2020-09-01 13:25:32 +08:00
usb_phy_hal.h usb: Add usb_phy driver to support operations on USB PHY 2021-09-13 12:39:56 +08:00
usb_phy_types.h usb: Add usb_phy driver to support operations on USB PHY 2021-09-13 12:39:56 +08:00
usb_types_private.h Add USB Host Library 2021-08-24 23:28:00 +08:00
wdt_hal.h soc: combine xxx_caps.h into one soc_caps.h 2020-10-17 16:10:15 +08:00
wdt_types.h hal: extract hal component from soc component 2020-09-01 13:25:32 +08:00
xt_wdt_hal.h WDT: Add support for XTAL32K Watchdog timer 2021-09-02 09:09:00 +08:00

readme.md

HAL Layer Readme

The HAL layer is designed to be used by the drivers. We don't guarantee the stability and back-compatibility among versions. The HAL layer may update very frequently with the driver. Please don't use them in the applications or treat them as stable APIs.

The HAL layer consists of two layers: HAL (upper) and Lowlevel(bottom). The HAL layer defines the steps and data required by the peripheral. The lowlevel is a translation layer converting general conceptions to register configurations.

Lowlevel

This layer should be all static inline. The first argument of LL functions is usually a pointer to the beginning address of the peripheral register. Each chip should have its own LL layer. The functions in this layer should be atomic and independent from each other so that the upper layer can change/perform one of the options/operation without touching the others.

HAL

This layer should depend on the operating system as little as possible. It's a wrapping of LL functions, so that the upper layer can combine basic steps into different working ways (polling, non-polling, interrupt, etc.). Without using queues/locks/delay/loop/etc., this layer can be easily port to other os or simulation systems.

To get better performance and better porting ability, contexts are used to hold sustainable data and pass the parameters.

To develop your own driver, it is suggested to copy the HAL layer to your own code and keep them until manual update.