Commit graph

310 commits

Author SHA1 Message Date
Alex Lisitsyn
ef5dc73f6f driver: add rs485 half duplex interface support to uart driver (update after review)
An existing UART driver does not support RS485 half duplex mode.
This task adds this functionality to ESP_IDF UART driver.
driver/uart.c/h: updated to add support of RS485 half duplex mode
examples/peripherals/uart_echo_rs485/main/rs485_example.c: added test example
components/driver/test/test_uart.c: added test of RS485 half duplex mode
docs/en/api-reference/peripherals/uart.rst: updated documentation
test_uart.c: suppress GCC warnings about discarded const qualifiers
uart.rst: remove sphinx warning - "Duplicate explicit target name"
simple change in uart.h file
update (test_uart.c) after rebase from master
update uart.rst, uart.c, rs485_example.c
Update example description in file Readme.md
update uart.c/h, uart.rst, test_uart.c according to review results
update uart.h (uart_set_rx_timeout() description
test_uart.c remove ignore tag
uart.c/h: fix param errors
test_uart.c: Remove GCC warning supress
uart.rst: fix the notes
rs485_example.c: fix output

The tests are completed using RS485 adapters hardware connected to two ESP32 WROVER KITs.

TW#13812
Closes https://github.com/espressif/esp-idf/pull/667
Closes https://github.com/espressif/esp-idf/pull/1006
2018-07-02 15:24:58 +02:00
Alex Lisitsyn
b76693fe20 driver: add rs485 half duplex interface support to uart driver (update after review)
An existing UART driver does not support RS485 half duplex mode.
This task adds this functionality to ESP_IDF UART driver.
driver/uart.c/h: updated to add support of RS485 half duplex mode
examples/peripherals/uart_echo_rs485/main/rs485_example.c: added test example
components/driver/test/test_uart.c: added test of RS485 half duplex mode
docs/en/api-reference/peripherals/uart.rst: updated documentation
test_uart.c: suppress GCC warnings about discarded const qualifiers
uart.rst: remove sphinx warning - "Duplicate explicit target name"
simple change in uart.h file
update (test_uart.c) after rebase from master
update uart.rst, uart.c, rs485_example.c
Update example description in file Readme.md
update uart.c/h, uart.rst, test_uart.c according to review results
update uart.h (uart_set_rx_timeout() description

The tests are completed using RS485 adapters hardware connected to two ESP32 WROVER KITs.

TW#13812
Closes https://github.com/espressif/esp-idf/pull/667
Closes https://github.com/espressif/esp-idf/pull/1006
2018-07-02 15:24:58 +02:00
Alex Lisitsyn
51e9cf6848 driver: add rs485 half duplex interface support to uart driver (update after review)
An existing UART driver does not support RS485 half duplex mode.
This task adds this functionality to ESP_IDF UART driver.
driver/uart.c/h: updated to add support of RS485 half duplex mode
examples/peripherals/uart_echo_rs485/main/rs485_example.c: added test example
components/driver/test/test_uart.c: added test of RS485 half duplex mode
docs/en/api-reference/peripherals/uart.rst: updated documentation
test_uart.c: suppress GCC warnings about discarded const qualifiers
uart.rst: remove sphinx warning - "Duplicate explicit target name"
simple change in uart.h file
update (test_uart.c) after rebase from master
update uart.rst, uart.c, rs485_example.c
Update example description in file Readme.md
update uart.c/h, uart.rst, test_uart.c according to review results

The tests are completed using RS485 adapters hardware connected to two ESP32 WROVER KITs.

TW#13812
Closes https://github.com/espressif/esp-idf/pull/667
Closes https://github.com/espressif/esp-idf/pull/1006
2018-07-02 15:24:58 +02:00
Michael (XIAO Xufeng)
3d23fe9a61 feature(spi): provide macro to write multi-byte data straightly
resolves https://github.com/espressif/esp-idf/issues/2062
2018-07-02 15:34:47 +08:00
Konstantin Kondrashov
32da455384 soc: Fix check_long_hold_gpio and move def to soc
Fix factory_reset_pin init as input
Move definition a structure rtc_gpio_desc to soc

Closes https://github.com/espressif/esp-idf/issues/2030
2018-06-22 09:20:27 +05:00
michael
8ab87a6a87 chore(sdio_slave): format source files 2018-06-20 07:00:05 +00:00
Ivan Grokhotkov
4b91c82cc4 Merge branch 'feat/sdio_pullup' into 'master'
feature(sdio): add features to make SDIO slave compatible with more devkits

See merge request idf/esp-idf!2454
2018-06-20 13:58:56 +08:00
Angus Gratton
c1fdd45001 Merge branch 'bugfix/fix_touch_pad_can_not_wake_up' into 'master'
bugfix(touch pad): modify deep-sleep example and add note for sleep api

See merge request idf/esp-idf!2553
2018-06-20 11:51:46 +08:00
fuzhibo
9a0d57b90b bugfix(touch pad): modify deep-sleep example and add note for sleep api.
Closes https://github.com/espressif/esp-idf/issues/2052
2018-06-20 10:57:26 +08:00
michael
5b37a96ddc feature(sdio): allow to enable internal pullups of the SDIO host and slave as a debug feature
NOTE: the internal pullups are not totally reliable, please do add external pullups on your bus.
2018-06-14 12:04:22 +08:00
Michael (XIAO Xufeng)
77077196fd fix(spi): reset gpios that used by spi when deinited 2018-06-14 11:29:15 +08:00
Michael (XIAO Xufeng)
ebfda40b7c refactor(spi): move pin information into soc folder 2018-06-14 11:29:15 +08:00
Michael (XIAO Xufeng)
939e5693a5 chore(spi): fix the terms of native to iomux 2018-06-06 06:08:39 +00:00
michael
5cf7d3768d feat(spi_master): fine tune the timing of SPI 2018-06-06 06:08:39 +00:00
Angus Gratton
c9f8470fdf Merge branch 'feature/rmt_translator' into 'master'
driver(rmt): Add API supports sending uint8_t type data

See merge request idf/esp-idf!1975
2018-05-23 07:27:14 +08:00
Angus Gratton
75c27202f7 Merge branch 'feature/update_touchpad_filter_process' into 'master'
driver(touchpad): Change the measuring mode, improve the software filter.

See merge request idf/esp-idf!2358
2018-05-22 09:56:55 +08:00
kooho
5bc8ae3b3a driver(rmt):Add API supports sending uint8_t type data. 2018-05-22 01:55:44 +00:00
michael
f613859e29 feat(sdio_slave): add new driver for sdio_slave 2018-05-21 23:48:47 +08:00
Wangjialin
09181b7d94 driver(touchpad): improve touchpad filter mode and update examples. 2018-05-21 14:45:31 +08:00
kooho
f6f9f93a9d driver(i2c, rmt):Add intr_flag setting to ESP_INTR_FLAG_IRAM support when enable psram. 2018-05-21 09:37:56 +08:00
wangmengyang
22e21b38f7 component/bt: implement bluetooth modem sleep mode, one mode for BLE only and another for dual mode bluetooth
1. provide options for bluetooth low power mode
2. provide two options for bluetooth low power clock: main XTAL and external 32kHz XTAL
3. provide function and callbacks to control bluetooth low power mode, including enable/disable sleep, software wakeup request, low power clock settings, check power state, etc
4. modify vhci API vhci_host_send_packet to use blocking mode
5. note that DFS and bluetooth modem sleep can not be used together currently.
2018-05-19 15:37:26 +08:00
Roland Dobai
18e83bcd53 Allow VFS file descriptors in select() 2018-05-18 08:06:33 +02:00
Jiang Jiang Jian
cf9499479c Merge branch 'bugfix/i2s_mix_result_with_error_code_master' into 'master'
fix i2s mix result and error code

See merge request idf/esp-idf!2227
2018-05-17 21:53:06 +08:00
Jiang Jiang Jian
8c657dfee4 Merge branch 'bugfix/fix_an_error_in_comment_of_uart_driver' into 'master'
deiver(uart):revise the explanation of uart break length

See merge request idf/esp-idf!2398
2018-05-17 17:17:14 +08:00
Zhang Zhao Xiang
9deb58859c fix i2s mix result and error code 2018-05-17 10:59:04 +08:00
Angus Gratton
b2e264ef52 Merge branch 'feature/ledc_add_api_set_hpoint_val' into 'master'
driver(ledc): fix duty and fade issues and add thread-safe version APIs.

See merge request idf/esp-idf!2233
2018-05-16 19:52:26 +08:00
Angus Gratton
fcd5d0869d Merge branch 'bugfix/spi_native_pins' into 'master'
fix several spi issues about pin configurations

See merge request idf/esp-idf!2309
2018-05-15 14:19:20 +08:00
chenjianqiang
b5de860bcb revise the explain of a parameter(brk_len) in uart driver file 2018-05-14 19:47:16 +08:00
kooho
1bebec05c6 driver(ledc): fix duty and fade issues and add thread-safe version APIs.
1. Fix the duty fade check issue reported from https://github.com/espressif/esp-idf/issues/1914
2. Fix the duty overflow issue when duty_scale is set to 1.
3. Fix the duty fade error when a fade operation is under way. We must configure a new duty setting after the previous fade operation has finished due to hardware limit.
4. Add thread-safe version APIs to set duty and fade.
5. Correct the duty range in driver.
2018-05-14 12:27:21 +08:00
Angus Gratton
64c52022b9 Merge branch 'bugfix/add_comments_for_adc' into 'master'
driver(adc): Add descriptions that starting ADC can trigger interrupt of GPIO36…

See merge request idf/esp-idf!1910
2018-05-11 18:54:40 +08:00
kooho
d53661a663 driver(adc): add descriptions for the issue that starting ADC can trigger interrupt of GPIO36 and GPIO39. 2018-05-11 17:08:58 +08:00
Michael (XIAO Xufeng)
1f085b1a3b feat(gpio): add function allowing switching input source from GPIO back to IOMUX 2018-05-08 15:47:25 +08:00
Angus Gratton
b90ad81f22 driver: Add notes to SPI driver docs about thread safety 2018-05-07 09:03:48 +08:00
Ivan Grokhotkov
52f9a5ca16 Merge branch 'bugfix/sdspi_wp_cd_pins' into 'master'
sdmmc, sdspi: fix handling of CD and WP

See merge request idf/esp-idf!2285
2018-04-24 20:53:47 +08:00
Ivan Grokhotkov
2a7d85cfa4 sdmmc, sdspi: fix initializers to be C++-compatible, add test
Closes https://github.com/espressif/esp-idf/issues/1861
Closes https://github.com/espressif/arduino-esp32/issues/1312
2018-04-23 14:35:13 +08:00
Ivan Grokhotkov
6185e722c3 Revert "Merge branch 'feature/vfs_select' into 'master'"
This reverts merge request !2074
2018-04-20 11:51:41 +08:00
Ivan Grokhotkov
88d0d6ffb0 Merge branch 'feature/vfs_select' into 'master'
Allow VFS file descriptors in select()

See merge request idf/esp-idf!2074
2018-04-19 15:06:02 +08:00
Ivan Grokhotkov
b297b72abb Merge branch 'bugfix/fix_gpio_install_isr_service_check_value' into 'master'
driver(gpio): modify return value when gpio ISR service already exists.

See merge request idf/esp-idf!2125
2018-04-19 15:01:50 +08:00
Roland Dobai
6852d653bd Allow VFS file descriptors in select() 2018-04-17 11:25:30 +02:00
Ivan Grokhotkov
d3fd00c049 Merge branch 'bugfix/spi_miso_on_input_only_pins' into 'master'
fix(spi): allow to use MISO on GPIO34-39.

See merge request idf/esp-idf!2136
2018-04-16 14:39:02 +08:00
Angus Gratton
8b3fda99f5 Merge branch 'feature/uart_add_api_get_cmd_position' into 'master'
driver(uart): Add API to get the position of cmd_char

See merge request idf/esp-idf!2177
2018-04-16 08:03:25 +08:00
Wang Jia Lin
6c44fc70bc Merge branch 'feature/gpio_add_hold_support' into 'master'
driver(gpio):   Add api support digital pad hold function

See merge request idf/esp-idf!2186
2018-04-13 12:18:44 +08:00
Michael (Xiao Xufeng)
45f8bcf3f8 fix(spi): allow using MISO on GPIO34-39
Breaking Changes: arguments of ``spicommon_bus_initialize_io`` are changed.

Closes https://github.com/espressif/esp-idf/issues/1736.
2018-04-12 17:01:38 +08:00
Michael (Xiao Xufeng)
dceb3452c7 doc(spi_master): format the documentation of several fields and macros in spi_master.h 2018-04-12 17:01:37 +08:00
kooho
2236249555 driver(pcnt): Add some APIs to support each unit can have it's own interrupt handler. 2018-04-11 16:15:09 +08:00
Ivan Grokhotkov
ee600784c5 sdmmc: add SDIO support
- Add SDIO support at protocol layer (probing, data transfer, interrupts)
- Add SDIO interrupts support in SDMMC host
- Add test (communicate with ESP32 in SDIO download mode)
2018-04-11 11:07:13 +08:00
kooho
ccf09c3b39 driver(gpio): Add api support digital pad hold function. 2018-04-10 11:31:59 +08:00
kooho
305c788c60 driver(uart): Add API to get the position of cmd_char 2018-04-03 12:34:16 +08:00
Ivan Grokhotkov
bbbdec24d9 sdspi: handle error flags for R3/R7 responses
Previously error flags were only handled for R1 responses. This change
moves error handling into a separate function and calls it for R1/R3/R7.
2018-03-30 18:49:42 +08:00
Jiang Jiang Jian
8b9f237cb9 Merge branch 'feature/i2s_add_expand_function' into 'master'
add a new i2s feature to expand the original i2s width

See merge request idf/esp-idf!1617
2018-03-30 14:51:23 +08:00
kooho
8e1f930582 driver(gpio): Modified the GPIO_CHECK's return value when ISR service already installed 2018-03-29 09:58:31 +08:00
Ivan Grokhotkov
1a157279e0 Merge branch 'doc/adc1_channel_config' into 'master'
adc: Add doc details about configure not needed before each read

See merge request idf/esp-idf!2132
2018-03-28 19:11:44 +08:00
Angus Gratton
4507b3fde6 adc: Add doc details about configure not needed before each read 2018-03-28 11:52:41 +11:00
Michael (Xiao Xufeng)
7563510758 feat(spi_master): allow output high speed data when dummy bits are not used. 2018-03-26 21:24:32 +08:00
Zhang Zhao Xiang
f48ecb8613 Add a new i2s feature to expand the original i2s width 2018-03-22 18:52:55 +08:00
Ivan Grokhotkov
7e2028d598 Merge branch 'bugfix/gpio_timer_doc_fixes' into 'master'
Minor fixes of GPIO and timer group driver docs

See merge request idf/esp-idf!2081
2018-03-20 10:49:36 +08:00
Jonathan Kaufmann
a99d4d5a7f Modified spi_bus_add_device so that it takes a constant *dev_config parameter.
Merges https://github.com/espressif/esp-idf/pull/1690
2018-03-19 12:17:45 +08:00
Stefan Tauner
38daa1e716 docs: fix description of timer_get_alarm_value()
Replace c&p text with an actual description.

Merges https://github.com/espressif/esp-idf/pull/1740
2018-03-19 11:56:57 +08:00
Stefan Tauner
86a1d579ff docs: add warning to gpio_get_level()
On most microcontrollers I have worked with one can retrieve the
current state of output GPIO pins. On ESP32 this is not the case
if the pad is not explictly configured to route this information into
the port by configuring it as input or i/o.
Thus add a warning to the API documentation of gpio_get_level().

Merges https://github.com/espressif/esp-idf/pull/1740
2018-03-19 11:56:57 +08:00
Ivan Grokhotkov
c8ba6cf156 Merge branch 'feature/rtc_gpio_isolate' into 'master'
Add rtc_gpio_isolate function, use it in deep sleep examples

See merge request idf/esp-idf!1936
2018-02-26 06:09:08 +08:00
Tuan PM
7cda34c626 i2s: add support fixed_mclk configuration 2018-02-22 09:00:23 +07:00
Ivan Grokhotkov
f45622ff17 driver/rtc: add rtc_gpio_isolate helper function to disconnect RTC IO 2018-02-11 13:18:51 +08:00
Ivan Grokhotkov
e381c6adde Merge branch 'bugfix/fix_i2s_adc_mode' into 'master'
driver(i2s): fix broken i2s adc mode

See merge request idf/esp-idf!1653
2018-02-11 12:58:58 +08:00
Jeroen Domburg
35de8d703e Merge branch 'bugfix/spi_gpio0' into 'master'
fix(spi): several fixes about maros (flags) and GPIO0.

See merge request idf/esp-idf!1666
2018-02-07 18:50:13 +08:00
Wangjialin
451f69cc2e driver(i2s): fix broken i2s adc mode
1. Move i2s reset code from i2s_stop to i2s_start.
2. add RTC API to set sw mode for ADC
3. add description for adc_power_always_on()
4. add lock for i2s dma and RTC ADC functions.
5. add ADC read task in example

reported from bbs:  https://esp32.com/viewtopic.php?f=13&t=3490&p=17522#p17522
reported from github: https://github.com/espressif/esp-idf/issues/1333
2018-02-07 17:17:20 +08:00
Michael (XIAO Xufeng)
e14e1508cb fix(sdmmc_host): fix the issue when slot and host flag are not compatible. 2018-02-07 12:05:05 +08:00
Angus Gratton
4297c337f9 esp32: Add IO_MUX_GPIOxx register names to match iomux names used in TRM
The TRM describes IOMUX registers are IO_MUX_x_REG for x in GPIO0-39.

Until now ESP-IDF describes them as PERIPHS_IO_MUX_(pinname)_U

This commit adds additional IOMUX register names which match the ones used in the TRM.
2018-01-30 17:09:37 +08:00
michael
be96e1db95 fix(spi): fix typo of LSBFIRST macro.
Closes https://github.com/espressif/esp-idf/issues/1480, Closes https://github.com/espressif/esp-idf/issues/1464
2018-01-29 17:44:37 +08:00
michael
8900200147 fix(spi_master): fix the variable command and address flag issue.
Closes https://github.com/espressif/esp-idf/issues/1549
2018-01-29 17:44:36 +08:00
Wangjialin
870efdb9d4 bugfix(uart): patten detect function
requirement from github(https://github.com/espressif/esp-idf/issues/805): to provide the position in the buffer of the pattern detected.

requirement from AT application: in AT app, when no hardware flow control is enabled, in some situation the rx buffer might be full, and the terminator “+++” might be lost, we can use pattern detect interrupt to avoid missing the terminator. When pattern detect interrupt happens, it will not send a data event at the same time.

1. Add API to get position of detected pattern in rx buffer
2. Modify UART event example
3. Add comments for uart_flush, add alias API uart_flush_input to clear the rx buffer
4. Modify the way rx_buffered_len is calculated
2018-01-22 13:33:51 +08:00
Angus Gratton
2227c44254 rmt: Add void * argument for end-of-transmission callback
Ref https://github.com/espressif/esp-idf/pull/1174
2018-01-05 17:31:59 +11:00
Krzysztof Bociurko
1066c74b74 rmt: Adds a simple handler that can be called when transmission ends.
Merges https://github.com/espressif/esp-idf/pull/1174
2018-01-05 17:14:02 +11:00
michael
7a7b8fc182 refactor(spi_master): move the clock calculation from ISR to initialization. 2017-12-28 12:03:28 +08:00
Angus Gratton
ec7cac5fe8 Merge branch 'feature/docs_update_rmt_api' into 'master'
RMT API docs update, new example

See merge request !1564
2017-12-27 09:23:47 +08:00
kooho
d78be97154 add NACK for the last byte to read 2017-12-26 21:50:18 +08:00
krzychb
421592a8eb LEDC Driver: Added back original definitions of 'duty_resolution' and 'clock_divider'. This update is to provide backward compatibility with ESP-IDF 2.1. 2017-12-04 21:12:56 +01:00
Jiang Jiang Jian
c672fc54fd Merge branch 'feature/ledc_more_meaningful_parameter_names' into 'master'
Provided more meaningful parameter names by renaming 'bit_num' to 'duty_resoluti…

See merge request !1440
2017-12-01 19:33:53 +08:00
krzychb
866b84b9f8 Typo fix. Closes https://github.com/espressif/esp-idf/issue/1323 2017-12-01 09:06:08 +01:00
kooho
ada33fe3dd Add GPIO input and output disable option 2017-11-22 15:00:27 +08:00
krzychb
2ec35f60ca RMT API docs update, new example 2017-11-21 22:34:23 +01:00
Angus Gratton
f54e99008d spi: Add ESP_ERR_NO_MEM to spi_device_queue_trans() documentation
Ref https://github.com/espressif/esp-idf/pull/1243#issuecomment-343103414
2017-11-20 16:06:59 +11:00
Raphael Luba
31711b5ac7 SPI: Document TIMEOUT return values
`spi_device_queue_trans` and `spi_device_get_trans_result` can return `ESP_ERR_TIMEOUT` – but this had not been documented.

Merges https://github.com/espressif/esp-idf/pull/1243
2017-11-17 10:50:54 +11:00
krzychb
d488bb7bac Provided more meaningful parameter names by renaming 'bit_num' to 'duty_resolution' and 'div_num' to 'clock_divider' 2017-11-15 08:08:12 +01:00
Ivan Grokhotkov
09d2791cfd Merge branch 'feature/spi_variable_len' into 'master'
feat(spi_master): add new feature allow use variable command and address field length for the same device.

See merge request !1322
2017-11-14 00:08:50 +08:00
Anton Maklakov
27c1fc52ba Added .command_timeout_ms = 0 to SDSPI_HOST_DEFAULT() too 2017-11-08 12:52:50 +08:00
Philip Ashmore
d72bef02e9 Added .command_timeout_ms = 0 to SDMMC_HOST_DEFAULT() in components/driver/include/driver/sdmmc_host.h 2017-11-03 17:15:44 +08:00
XiaXiaotian
42cefc173f refractor WiFi clock setting
Do not set WiFi clock in PHY initializing function, move it to WiFi
   start/stop function.
2017-11-02 15:24:21 +08:00
wangmengyang
bd6394db92 component/bt: clean up WIFI_CLK_EN_REG settings for Bluetooth
1. move settings of WIFI_CLK_EN_REG for bluetooth into controller init/deinit APIs
2. modify the bit mask used in phy_rf init/deinit to use WIFI-BT shared bits
2017-11-02 15:24:21 +08:00
michael
0330ec270a feat(spi_master): add new feature allow use variable command and address field length for the same device.
Closes #654
2017-10-30 19:33:41 +08:00
Angus Gratton
ffeecde9e2 Merge branch 'feature/docs_update_timer_api' into 'master'
Timer API docs update, refactored example

See merge request !1316
2017-10-27 13:31:18 +08:00
krzychb
9b7d5d76a7 Timer API docs update, refactored example 2017-10-27 07:13:59 +02:00
Angus Gratton
f5b3a370cd Merge branch 'feature/adc2_driver' into 'master'
feature(adc2): add support to use ADC2 when WIFI is disabled

See merge request !1237
2017-10-26 15:48:48 +08:00
esp32de
7c0020bfd0 feat(adc2): append adc2 support and api and the lock with WIFI module
append adc support and api
- esp_err_t adc2_config_width(adc_bits_width_t width_bit);
- esp_err_t adc2_config_channel_atten(adc2_channel_t channel, adc_atten_t atten);
- int adc2_get_voltage(adc2_channel_t channel);
2017-10-26 14:35:29 +08:00
Wangjialin
303b9f60db bugfix(uart): set default tx idle num
Reported from:
https://github.com/espressif/esp-idf/issues/703
https://github.com/espressif/esp-idf/issues/917
In uart driver we didn't change the default value of tx idle num, so there would be a delay after tx FIFO is empty.

1. Add API to set tx idle interval before next data transmission. (The UART hardware can add an interval after tx FIFO is empty).
2. Set default tx idle interval to zero.
3. Add hardware disable in uart driver delete function.
2017-10-25 13:29:02 +08:00
michael
a6ac5b33c9 feat(rtc): open adc*(dac)_pad_get_io_num functions to public. 2017-10-24 12:06:14 +08:00
Angus Gratton
01befe4d6a Merge branch 'bugfix/i2c_hw_fsm_recover' into 'master'
bugfix(i2c): add I2C hardware reset if the hw FSM get stuck

See merge request !1272
2017-10-23 10:16:02 +08:00
Ivan Grokhotkov
59b7d98fec Merge branch 'feature/dfs' into 'master'
Dynamic frequency scaling

See merge request !1189
2017-10-22 12:34:11 +08:00
Wangjialin
ed1e32f583 bugfix(i2c): add I2C hardware reset if the hw FSM get stuck
Reported from different sources from github or bbs:

https://github.com/espressif/esp-idf/issues/680

https://github.com/espressif/esp-idf/issues/922

We tested reading several sensor or other I2C slave devices, if the power and SDA/SCL wires are in proper condition, everything works find with reading the slave.
If we remove the power supply for the slave during I2C is reading, or directly connect SDA or SCL to ground, this would  cause the I2C FSM get stuck in wrong state, all we can do is the reset the I2C hardware in this case.
After this commit, no matter whether the power supply of I2C slave is removed or SDA / SCL are shorted to ground, the driver can recover from wrong state.

We are not sure whether this the save issue with the reported one yet, but to make the driver more robust.

Further information:

1. For I2C master mode, we have tested different situations, e.g., to short the SDA/SCL directly to GND/VCC, to short the SDA to SCL, to un-plug the slave device, to power off the slave device. Under all of those situations, this version of driver can recover and keep working.
2. Some slave device will die by accident and keep the SDA in low level, in this case, master should send several clock to make the slave release the bus.
3. Slave mode of ESP32 might also get in wrong state that held the SDA low, in this case, master device could send a stop signal to make esp32 slave release the bus.

Modifications:

1. Disable I2C_MASTER_TRAN_COMP interrupt to void extra interrupt.
2. Disable un-used timeout interrupt for slave.
3. Add bus reset if error detected for master mode.
4. Add bus clear if SDA level is low when error detected.
5. Modify the argument type of i2c_set_pin.
6. add API to set timeout value
7. add parameter check for timing APIs
2017-10-21 02:10:59 +08:00
Ivan Grokhotkov
b6f37bda97 Merge branch 'feature/i2s_built_in_adc' into 'master'
feature(I2S-ADC): add ADC mode for I2S.

See merge request !1077
2017-10-20 15:52:56 +08:00
Angus Gratton
477ed8ce62 Merge branch 'bugfix/touchpad_dac_mismatch_on_tp8_tp9' into 'master'
bugfix(touch): add workaround for touch pad DAC hardware source mismatch on tp8 and tp9.

See merge request !1288
2017-10-20 14:18:32 +08:00