Several LP core pytest files were either hardcoded to specific chip lists
or using a less-precise SOC capability filter:
- test_lp_core_multi_device: was locked to ['esp32c6'] pending a workaround
for LP I2C on esp32p4; all three active LP core chips now have
SOC_LP_I2C_SUPPORTED=1, so switch to soc_filtered_targets.
- test_lp_uart_wakeup_modes: was using SOC_LP_CORE_SUPPORTED which is
semantically wrong for a UART test; change to SOC_ULP_LP_UART_SUPPORTED.
- LP core example pytests (build_system, interrupt, gpio_intr_pulse_counter,
lp_timer_interrupt): replace hardcoded ['esp32c5', 'esp32c6', 'esp32p4']
with soc_filtered_targets('SOC_LP_CORE_SUPPORTED == 1') so that new
chips automatically get coverage when their SOC cap is enabled.
Made-with: Cursor
This commit adds the lp_core_uart_flush() API to flush the LP UART Tx
FIFO. This API is automatically called once the program returns from the
main function().
Closes https://github.com/espressif/esp-idf/issues/14530
LP core was unable to boot when system was in deepsleep.
This was due to lp uart init in LP rom using XTAL as clk source,
which is normally powered down during sleep.
This would cause lp uart to get stuck while printing ROM output,
and the app would never boot.
Also fixed wrong wakeup cause used by HP core for ULP wake up
When using USB-serial-jtag for monitoring idf-monitor will lose connection
during deep sleep (because the peripheral powers down) and will need
some time to reconnect when we wake-up. In the ULP examples this would result in
the chip waking up->printing-> going back to sleep, before idf-monitor is even able
to connect, and users would erroneously assume the chip never woke up.
Add a 1 sec delay at the start of the examples to improve the user experience when
using jtag-serial.
This commit adds a minimal logging driver for the LP core. The logging
driver provides a printf function which is built on top of the LP UART
driver. The commit also adds an example to demonstrate how to use print
statements in an LP core program.
This commit adds a UART driver for the LP core to interact with the LP
UART. The commit also adds an example to demonstrate the usage of the LP
UART driver.
This commit adds a driver for reading the touch sensor from the ULP
RISC-V core during sleep. The commit also adds an example to demonstrate
this feature.
Closes https://github.com/espressif/esp-idf/issues/10480
