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
components/wpa_supplicant/port/include/os.h:259:29: error: 'strncpy' output truncated before terminating nul copying 3 bytes from a string of the same length [-Werror=stringop-truncation]
#define os_strncpy(d, s, n) strncpy((d), (s), (n))
^~~~~~~~~~~~~~~~~~~~~~
components/wpa_supplicant/src/wpa2/eap_peer/eap.c:410:3: note: in expansion of macro 'os_strncpy'
os_strncpy(sm->blob[0].name, CLIENT_CERT_NAME, BLOB_NAME_LEN);
^~~~~~~~~~
components/spi_flash/partition.c: In function 'load_partitions':
components/spi_flash/partition.c:179:66: error: argument to 'sizeof' in 'strncpy' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess]
strncpy(item->info.label, (const char*) it->label, sizeof(it->label));
^
components/fatfs/src/ff.c: In function 'f_fdisk':
components/fatfs/src/ff.c:5995:5: error: this 'for' clause does not guard... [-Werror=misleading-indentation]
for (n = 16; n < 256 && sz_disk / n / cluster_size > 1024; n *= 2) ;
^~~
components/fatfs/src/ff.c:5996:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
if (n == 256) n--;
^~
components/esp32/ipc.c: In function 'esp_ipc_init':
components/esp32/ipc.c:82:31: error: '%d' directive writing between 1 and 11 bytes into a region of size 5 [-Werror=format-overflow=]
sprintf(task_name,"ipc%d",i);
^~
components/esp32/ipc.c:82:27: note: directive argument in the range [-2147483648, 1]
sprintf(task_name,"ipc%d",i);
^~~~~~~
components/esp32/ipc.c:82:9: note: 'sprintf' output between 5 and 15 bytes into a destination of size 8
sprintf(task_name,"ipc%d",i);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
INTERRUPT and CCOUNT registers will change outside of program control.
Making the inline assembly used to read these registers volatile
indicates this fact to the compiler.
Fixes https://github.com/espressif/esp-idf/issues/2127
The fix is for the situation when cache disabling mechanism causes
a deadlock with user tasks. Situation is as follows:
1. spi_flash operation is started from low-priority task on CPU0
2. It uses IPC to wake up high-priority IPC1 task on CPU1, preventing
all other tasks on CPU1 from running. This is needed to safely
disable the cache.
3. While the task which started spi_flash operation is waiting for IPC1
task to acknowledge that CPU1 is not using cache anymore, it is
preempted by a higher priority application task ("app0").
4. Task app0 busy-waits for some operation on CPU1 to complete. But
since application tasks are blocked out by IPC1 task, this never
happens. Since app0 is busy-waiting, the task doing spi flash
operation never runs.
The more or less logical soltion to the problem would be to also do
cache disabling on CPU0 and the SPI flash operation itself from IPC0
task. However IPC0 task stack would need to be increased to allow doing
SPI flash operation (and IPC1 stack as well). This would waste some
memory. An alternative approach adopted in this fix is to call FreeRTOS
functions to temporary increase the priority of SPI flash operation task
to the same level as the IPC task.
Fixes https://github.com/espressif/arduino-esp32/issues/740
Fixes https://github.com/espressif/esp-idf/issues/1157
1. fix BLE connection missing in coex mode
2. modify other parameters to make coex priority more reasonable
3. fix modem sleep procedure trap cause Wifi disable RF when BT is
working. Such cause that BR/EDR is difficult to be connected, BLE
connection stability decrease and so on.
4. modify BR/EDR coexist duration to imrove BR/EDR connect success
ratio.
5. Due to the hardware coexist bug, BLE scan interval/window should
be less than 0x100(about 160ms). Therefore, it will cause BLE cannot
scan any advertising packet while WiFi have higher priority
behaviour(such like RX beacon, scan, TX/RX VO packets and etc.).
1. add APIs to set/get announce interval values.
2. add API to enable/disable the min rate to 6Mbps for data packages.
3. add APIs to set/get RSSI threshold values.
4. fix ap_loss.
Moved useful functions from wrapped assert functions, because option `CONFIG_OPTIMIZATION_ASSERTIONS_DISABLED=y` will remove this functions.
Closes https://github.com/espressif/esp-idf/issues/2068
1. esp_ble_remove_bond_device will only remove BLE bond key and disconnect BLE device.
2. esp_bt_gap_remove_bond_device will only remove BT bond key and disconnect BT device.
As reported https://esp32.com/viewtopic.php?f=14&t=6171
event_callback() in sockets.c calls conn->socket-- to register
activity on a netconn which may not have any socket yet,
so any socket value < 0 indicates "no controlling socket"
for the netconn.
IDF had two defines ESP_PARTITION_TABLE_OFFSET and ESP_PARTITION_TABLE_ADDR. They were the same and equal by 0x8000.
A define ESP_PARTITION_TABLE_ADDR was removed from IDF.
A define ESP_PARTITION_TABLE_OFFSET depends on option CONFIG_PARTITION_TABLE_OFFSET in Kconfig.
Now using only #define ESP_PARTITION_TABLE_OFFSET CONFIG_PARTITION_TABLE_OFFSET
This change allows readonly FATFS to be mounted without wear levelling
support. This will provide the customers a simple way to mount FATFS images
generated on host and flashed onto the chip during factory provisioning.
Since NVS encryption is not supported yet and NVS entry size is limited,
the change will provide an easy alternative for securing the provisioning data
by just marking FATFS parition as encrypted.
* a missing pointer increment caused error, if available was > 0 after the first iteration of while(available) loop.
* changed memory allocation strategy from large fixed size (RFCOMM_DATA_BUF_SIZE) to just the needed
size, which will be below MTU
Cherry-picked from https://github.com/espressif/esp-idf/pull/1923/
Since commit 94250e4, EXT0 wakeup mechanism, when wakeup level was set
to 0, started waking up chip immediately after entering deep sleep.
This failure was triggered in that commit by a change of
RTC_CNTL_MIN_SLP_VAL (i.e. minimum time in sleep mode until wakeup
can happen) from 128 cycles to 2 cycles.
The reason for this behaviour is related to the way input enable (IE)
signal going into an RTC pad is obtained:
PAD_IE = (SLP_SEL) ? SLP_IE & CHIP_SLEEP : IE,
where SLP_IE, SLP_SEL, and IE are bits of an RTC_IO register related
to the given pad. CHIP_SLEEP is the signal indicating that chip has
entered sleep mode.
The code in prepare_ext{0,1}_wakeup did not enable IE, but did enable
SLP_SEL and SLP_IE. This meant that until CHIP_SLEEP went high, PAD_IE
was 0, hence the input from the pad read 0 even if external signal
was 1. CHIP_SLEEP went high on the 2nd cycle of sleep. So when
RTC_CNTL_MIN_SLP_VAL was set to 2, the input signal from the pad was
latched as 0 at the moment when CHIP_SLEEP went high, causing EXT0
wakeup with level 0 to trigger.
This commit changes the way PAD_IE is enabled: SLP_SEL and SLP_IE are
no longer used, and IE is set to 1. If EXT0 wakeup is used, RTC_IO is
not powered down, so IE signal stays 1 both before CHIP_SLEEP goes
high and after. If EXT1 wakeup is used, RTC_IO may be powered down.
However prepare_ext1_wakeup enables Hold on the pad, locking states
of all the control signals, including IE.
Closes https://github.com/espressif/esp-idf/issues/1931
Closes https://github.com/espressif/esp-idf/issues/2043
For some test configurations, not all tests need to be run. This
change allows adding a comment in the configuration file of the
following form:
unit-test-app makefile will use it to determine which components to
build. If the comment is not present, all components will be built
(TESTS_ALL=1).
Also add test configuration for libsodium. It is a separate test
configuration due to the large binary size generated when building
libsodium tests.
Previously the loop in esp_timer_impl_set_alarm was necessary to catch
the case when timer count wraps around (goes from 2^32 - 1 to 0).
Since ALARM_OVERFLOW_VAL was reduced from 2^32 - 1 to 0xefffffff,
this is no longer necessary.
Fixes https://github.com/espressif/esp-idf/issues/1891
Alex Lisitsyn