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Posted to commits@nuttx.apache.org by si...@apache.org on 2026/04/24 10:38:10 UTC
(nuttx) branch master updated (5e29129d97d -> 61b0fd15faf)
This is an automated email from the ASF dual-hosted git repository.
simbit18 pushed a change to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git
from 5e29129d97d Docs/platforms/esp32p4: Add LP_ADC docs
new ac26b635568 arch/risc-v/espressif: Add ULP wakeup modes
new 2eb686f72fa board/risc-v/espressif: Add ULP wakeup modes board support
new 61b0fd15faf Docs/platforms/risc-v: Add ULP wakeup modes docs for esp32[-c6|-p4]
The 3 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails. The revisions
listed as "add" were already present in the repository and have only
been added to this reference.
Summary of changes:
Documentation/platforms/risc-v/esp32c6/index.rst | 12 +
Documentation/platforms/risc-v/esp32p4/index.rst | 12 +
arch/risc-v/src/common/espressif/Kconfig | 265 ++++++++++++++++++++
arch/risc-v/src/common/espressif/esp_ulp.c | 266 ++++++++++++++++++++-
arch/risc-v/src/common/espressif/esp_ulp.h | 6 +-
.../esp32c6/esp32c6-devkitc/src/esp32c6_bringup.c | 12 +-
.../src/esp32p4_bringup.c | 12 +-
7 files changed, 575 insertions(+), 10 deletions(-)
(nuttx) 03/03: Docs/platforms/risc-v: Add ULP wakeup modes docs for esp32[-c6|-p4]
Posted by si...@apache.org.
This is an automated email from the ASF dual-hosted git repository.
simbit18 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git
commit 61b0fd15fafe376c3f150662b772a1afdd0bd2f6
Author: Eren Terzioglu <er...@espressif.com>
AuthorDate: Fri Apr 17 12:25:40 2026 +0200
Docs/platforms/risc-v: Add ULP wakeup modes docs for esp32[-c6|-p4]
Add ULP wakeup modes docs for esp32[-c6|-p4]
Signed-off-by: Eren Terzioglu <er...@espressif.com>
---
Documentation/platforms/risc-v/esp32c6/index.rst | 12 ++++++++++++
Documentation/platforms/risc-v/esp32p4/index.rst | 12 ++++++++++++
2 files changed, 24 insertions(+)
diff --git a/Documentation/platforms/risc-v/esp32c6/index.rst b/Documentation/platforms/risc-v/esp32c6/index.rst
index cd0de28d744..c221ed0b196 100644
--- a/Documentation/platforms/risc-v/esp32c6/index.rst
+++ b/Documentation/platforms/risc-v/esp32c6/index.rst
@@ -1099,6 +1099,18 @@ Here is a snippet for reading and writing to a ULP variable named ``var_test`` (
return OK;
}
+ULP LP-Core Wakeup Configuration
+--------------------------------
+
+By default, ULP LP-Core is woken up by HP core but other wakeup sources can be selected.
+
+The available wakeup sources are:
+
+* ``CONFIG_ESPRESSIF_ULP_WAKEUP_HP_CPU``: Wakeup by HP core
+* ``CONFIG_ESPRESSIF_ULP_WAKEUP_LP_TIMER``: Wakeup by LP timer
+* ``CONFIG_ESPRESSIF_ULP_WAKEUP_LP_UART``: Wakeup by LP UART activity
+* ``CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO``: Wakeup by LP IO
+
Debugging ULP LP-Core
---------------------
diff --git a/Documentation/platforms/risc-v/esp32p4/index.rst b/Documentation/platforms/risc-v/esp32p4/index.rst
index fe92dbaa086..5ad0ae976f5 100644
--- a/Documentation/platforms/risc-v/esp32p4/index.rst
+++ b/Documentation/platforms/risc-v/esp32p4/index.rst
@@ -677,6 +677,18 @@ prefix (defined by the ``ULP_APP_NAME`` variable in the ULP application Makefile
access the binary data (e.g., if ``ULP_APP_NAME`` is ``ulp_test``, the binary variable will be ``ulp_test_bin``)
and ``bin_len`` keyword to access its length (e.g., ``ulp_test_bin_len`` for ``ULP_APP_NAME`` is ``ulp_test``).
+ULP LP-Core Wakeup Configuration
+--------------------------------
+
+By default, ULP LP-Core is woken up by HP core but other wakeup sources can be selected.
+
+The available wakeup sources are:
+
+* ``CONFIG_ESPRESSIF_ULP_WAKEUP_HP_CPU``: Wakeup by HP core
+* ``CONFIG_ESPRESSIF_ULP_WAKEUP_LP_TIMER``: Wakeup by LP timer
+* ``CONFIG_ESPRESSIF_ULP_WAKEUP_LP_UART``: Wakeup by LP UART activity
+* ``CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO``: Wakeup by LP IO
+
Accessing the ULP LP-Core Program Variables
-------------------------------------------
(nuttx) 01/03: arch/risc-v/espressif: Add ULP wakeup modes
Posted by si...@apache.org.
This is an automated email from the ASF dual-hosted git repository.
simbit18 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git
commit ac26b6355683818dc097e1e40fa475f0d12d9ee1
Author: Eren Terzioglu <er...@espressif.com>
AuthorDate: Wed Apr 15 18:18:44 2026 +0200
arch/risc-v/espressif: Add ULP wakeup modes
Add ULP wakeup modes for esp32[-c6|-p4]
Signed-off-by: Eren Terzioglu <er...@espressif.com>
---
arch/risc-v/src/common/espressif/Kconfig | 265 ++++++++++++++++++++++++++++
arch/risc-v/src/common/espressif/esp_ulp.c | 266 ++++++++++++++++++++++++++++-
arch/risc-v/src/common/espressif/esp_ulp.h | 6 +-
3 files changed, 533 insertions(+), 4 deletions(-)
diff --git a/arch/risc-v/src/common/espressif/Kconfig b/arch/risc-v/src/common/espressif/Kconfig
index e62ffab54bb..22990f6eaad 100644
--- a/arch/risc-v/src/common/espressif/Kconfig
+++ b/arch/risc-v/src/common/espressif/Kconfig
@@ -643,6 +643,271 @@ config ESPRESSIF_ULP_ENABLE_UBSAN
But note that it will increase code size significantly and it can happen that
application will not fit into RTC RAM
+choice ESPRESSIF_ULP_WAKEUP_SOURCE
+ prompt "LP Coprocessor wakeup source"
+ default ESPRESSIF_ULP_WAKEUP_HP_CPU
+
+config ESPRESSIF_ULP_WAKEUP_HP_CPU
+ bool "Wakeup by HP core"
+
+config ESPRESSIF_ULP_WAKEUP_LP_UART
+ depends on ESPRESSIF_LP_UART
+ bool "Wakeup by LP UART RX"
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO
+ bool "Wakeup by LP IO interrupt"
+
+config ESPRESSIF_ULP_WAKEUP_LP_TIMER
+ bool "Wakeup by LP timer"
+
+endchoice # ESPRESSIF_ULP_WAKEUP_SOURCE
+
+menu "ULP Wakeup LP IO Sources"
+ depends on ESPRESSIF_ULP_WAKEUP_LP_IO
+
+menu "GPIOs to wakeup ULP when low"
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO0_LOW
+ bool "LP_IO0"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO0 is low.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO1_LOW
+ bool "LP_IO1"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO1 is low.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO2_LOW
+ bool "LP_IO2"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO2 is low.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO3_LOW
+ bool "LP_IO3"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO3 is low.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO4_LOW
+ bool "LP_IO4"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO4 is low.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO5_LOW
+ bool "LP_IO5"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO5 is low.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO6_LOW
+ bool "LP_IO6"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO6 is low.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO7_LOW
+ bool "LP_IO7"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO7 is low.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO8_LOW
+ bool "LP_IO8"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO8 is low
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO9_LOW
+ bool "LP_IO9"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO9 is low
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO10_LOW
+ bool "LP_IO10"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO10 is low
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO11_LOW
+ bool "LP_IO11"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO11 is low
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO12_LOW
+ bool "LP_IO12"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO12 is low
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO13_LOW
+ bool "LP_IO13"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO13 is low
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO14_LOW
+ bool "LP_IO14"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO14 is low
+
+endmenu # GPIOs to wakeup ULP when low
+
+menu "GPIOs to wakeup ULP when high"
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO0_HIGH
+ bool "LP_IO0"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO0 is high.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO1_HIGH
+ bool "LP_IO1"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO1 is high.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO2_HIGH
+ bool "LP_IO2"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO2 is high.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO3_HIGH
+ bool "LP_IO3"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO3 is high.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO4_HIGH
+ bool "LP_IO4"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO4 is high.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO5_HIGH
+ bool "LP_IO5"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO5 is high.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO6_HIGH
+ bool "LP_IO6"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO6 is high.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO7_HIGH
+ bool "LP_IO7"
+ default n
+ ---help---
+ Wakeup ULP when LP_GPIO7 is high.
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO8_HIGH
+ bool "LP_IO8"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO8 is high
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO9_HIGH
+ bool "LP_IO9"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO9 is high
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO10_HIGH
+ bool "LP_IO10"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO10 is high
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO11_HIGH
+ bool "LP_IO11"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO11 is high
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO12_HIGH
+ bool "LP_IO12"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO12 is high
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO13_HIGH
+ bool "LP_IO13"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO13 is high
+
+config ESPRESSIF_ULP_WAKEUP_LP_IO14_HIGH
+ bool "LP_IO14"
+ default n
+ depends on ARCH_CHIP_ESP32P4
+ ---help---
+ Wakeup ULP when LP_GPIO14 is high
+
+endmenu # GPIOs to wakeup ULP when high
+
+endmenu # ULP Wakeup LP IO Sources
+
+config ESPRESSIF_ULP_WAKEUP_SLEEP_DURATION_US
+ int "Sleep duration of LP Coprocessor in us"
+ depends on ESPRESSIF_ULP_WAKEUP_LP_TIMER
+ default 1000000
+
+choice ESPRESSIF_ULP_WAKEUP_LPUART_MODE
+ prompt "LP Coprocessor UART Wakeup Mode"
+ depends on ESPRESSIF_ULP_WAKEUP_LP_UART
+ default ESPRESSIF_ULP_WAKEUP_LPUART_START_BIT_MODE
+
+config ESPRESSIF_ULP_WAKEUP_LPUART_ACTIVE_EDGE_THRESHOLD_MODE
+ bool "Wake-up triggered by active edge threshold"
+
+config ESPRESSIF_ULP_WAKEUP_LPUART_FIFO_THRESHOLD_MODE
+ bool "Wake-up triggered by the number of bytes received in the RX FIFO"
+
+config ESPRESSIF_ULP_WAKEUP_LPUART_START_BIT_MODE
+ bool "Wake-up triggered by the detection of a start bit"
+
+config ESPRESSIF_ULP_WAKEUP_LPUART_CHAR_SEQ_MODE
+ bool "Wake-up triggered by detecting a specific character sequence"
+
+endchoice # ESPRESSIF_ULP_WAKEUP_LPUART_MODE
+
+config ESPRESSIF_ULP_WAKEUP_LPUART_ACTIVE_EDGE_THRESHOLD
+ int "Number of RXD edge changes to to trigger wake-up"
+ depends on ESPRESSIF_ULP_WAKEUP_LPUART_ACTIVE_EDGE_THRESHOLD_MODE
+ default 3
+
+config ESPRESSIF_ULP_WAKEUP_LPUART_FIFO_THRESHOLD
+ int "Number of bytes needed to receive in the RX FIFO to trigger wake-up"
+ depends on ESPRESSIF_ULP_WAKEUP_LPUART_FIFO_THRESHOLD_MODE
+ default 8
+
+config ESPRESSIF_ULP_WAKEUP_LPUART_CHAR_SEQ
+ string "Character sequence to trigger wake-up"
+ depends on ESPRESSIF_ULP_WAKEUP_LPUART_CHAR_SEQ_MODE
+ default "esp"
+
endmenu # LP Core (Low-power core) Coprocessor Configuration
menu "PM Configuration"
diff --git a/arch/risc-v/src/common/espressif/esp_ulp.c b/arch/risc-v/src/common/espressif/esp_ulp.c
index 4f5ad69648e..69c8a01d1f0 100644
--- a/arch/risc-v/src/common/espressif/esp_ulp.c
+++ b/arch/risc-v/src/common/espressif/esp_ulp.c
@@ -32,6 +32,11 @@
#include "ulp_lp_core.h"
#include "ulp/ulp_var_map.h"
+#include "esp_ulp.h"
+#include "driver/rtc_io.h"
+
+#include "ulp_lp_core_lp_uart_shared.h"
+#include "hal/uart_ll.h"
/****************************************************************************
* Pre-processor Definitions
@@ -65,7 +70,20 @@ static const struct file_operations g_esp_ulp_fops =
ulp_lp_core_cfg_t cfg =
{
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_HP_CPU
.wakeup_source = ULP_LP_CORE_WAKEUP_SOURCE_HP_CPU,
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_TIMER
+ .wakeup_source = ULP_LP_CORE_WAKEUP_SOURCE_LP_TIMER,
+ .lp_timer_sleep_duration_us =
+ CONFIG_ESPRESSIF_ULP_WAKEUP_SLEEP_DURATION_US,
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO
+ .wakeup_source = ULP_LP_CORE_WAKEUP_SOURCE_LP_IO,
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_UART
+ .wakeup_source = ULP_LP_CORE_WAKEUP_SOURCE_LP_UART,
+#endif
};
/****************************************************************************
@@ -76,6 +94,231 @@ ulp_lp_core_cfg_t cfg =
* Private Functions
****************************************************************************/
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_UART
+/****************************************************************************
+ * Name: esp_ulp_wakeup_lpuart_init
+ *
+ * Description:
+ * Configure LPUART to use as ULP wakeup source.
+ *
+ * Input Parameters:
+ * None
+ *
+ * Returned Value:
+ * Zero (OK) on success, or -1 (ERROR) in case of failure.
+ *
+ ****************************************************************************/
+
+static int esp_ulp_wakeup_lpuart_init(void)
+{
+ uart_wakeup_cfg_t wake_up_cfg =
+ {
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LPUART_ACTIVE_EDGE_THRESHOLD_MODE
+ .wakeup_mode = UART_WK_MODE_ACTIVE_THRESH,
+ .rx_edge_threshold =
+ CONFIG_ESPRESSIF_ULP_WAKEUP_LPUART_ACTIVE_EDGE_THRESHOLD
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LPUART_FIFO_THRESHOLD_MODE
+ .wakeup_mode = UART_WK_MODE_FIFO_THRESH,
+ .rx_fifo_threshold = CONFIG_ESPRESSIF_ULP_WAKEUP_LPUART_FIFO_THRESHOLD
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LPUART_START_BIT_MODE
+ .wakeup_mode = UART_WK_MODE_START_BIT,
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LPUART_CHAR_SEQ_MODE
+ .wakeup_mode = UART_WK_MODE_CHAR_SEQ,
+ .wake_chars_seq = CONFIG_ESPRESSIF_ULP_WAKEUP_LPUART_CHAR_SEQ
+#endif
+ };
+
+ return uart_wakeup_setup(LP_UART_NUM_0, &wake_up_cfg);
+}
+#endif
+
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO
+/****************************************************************************
+ * Name: esp_ulp_get_high_io_mask
+ *
+ * Description:
+ * Get ULP wakeup high IO mask value from configured wakeup pins.
+ *
+ * Input Parameters:
+ * None
+ *
+ * Returned Value:
+ * A 64-bit unsigned integer where each bit corresponds to an RTC GPIO pin
+ * that has been configured high as an ULP wakeup source.
+ *
+ ****************************************************************************/
+
+static uint64_t esp_ulp_get_high_io_mask(void)
+{
+ uint64_t io_mask = 0;
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO0_HIGH
+ io_mask |= BIT(0);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO1_HIGH
+ io_mask |= BIT(1);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO2_HIGH
+ io_mask |= BIT(2);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO3_HIGH
+ io_mask |= BIT(3);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO4_HIGH
+ io_mask |= BIT(4);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO5_HIGH
+ io_mask |= BIT(5);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO6_HIGH
+ io_mask |= BIT(6);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO7_HIGH
+ io_mask |= BIT(7);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO8_HIGH
+ io_mask |= BIT(8);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO9_HIGH
+ io_mask |= BIT(9);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO10_HIGH
+ io_mask |= BIT(10);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO11_HIGH
+ io_mask |= BIT(11);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO12_HIGH
+ io_mask |= BIT(12);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO13_HIGH
+ io_mask |= BIT(13);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO14_HIGH
+ io_mask |= BIT(14);
+#endif
+
+ return io_mask;
+}
+
+/****************************************************************************
+ * Name: esp_ulp_get_low_io_mask
+ *
+ * Description:
+ * Get ULP wakeup low IO mask value from configured wakeup pins.
+ *
+ * Input Parameters:
+ * None
+ *
+ * Returned Value:
+ * A 64-bit unsigned integer where each bit corresponds to an RTC GPIO pin
+ * that has been configured low as an ULP wakeup source.
+ *
+ ****************************************************************************/
+
+static uint64_t esp_ulp_get_low_io_mask(void)
+{
+ uint64_t io_mask = 0;
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO0_LOW
+ io_mask |= BIT(0);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO1_LOW
+ io_mask |= BIT(1);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO2_LOW
+ io_mask |= BIT(2);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO3_LOW
+ io_mask |= BIT(3);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO4_LOW
+ io_mask |= BIT(4);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO5_LOW
+ io_mask |= BIT(5);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO6_LOW
+ io_mask |= BIT(6);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO7_LOW
+ io_mask |= BIT(7);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO8_LOW
+ io_mask |= BIT(8);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO9_LOW
+ io_mask |= BIT(9);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO10_LOW
+ io_mask |= BIT(10);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO11_LOW
+ io_mask |= BIT(11);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO12_LOW
+ io_mask |= BIT(12);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO13_LOW
+ io_mask |= BIT(13);
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO14_LOW
+ io_mask |= BIT(14);
+#endif
+
+ return io_mask;
+}
+
+/****************************************************************************
+ * Name: esp_ulp_wakeup_io_init
+ *
+ * Description:
+ * Configure GPIO to use as ULP wakeup source.
+ *
+ * Input Parameters:
+ * None
+ *
+ * Returned Value:
+ * Zero (OK) on success, or -1 (ERROR) in case of failure.
+ *
+ ****************************************************************************/
+
+static int esp_ulp_wakeup_io_init(void)
+{
+ int ret = OK;
+ int pin_mask;
+ gpio_int_type_t wake_up_type;
+ uint64_t io_mask_low = esp_ulp_get_low_io_mask();
+ uint64_t io_mask_high = esp_ulp_get_high_io_mask();
+
+ for (int i = 0; i < CONFIG_SOC_RTCIO_PIN_COUNT; i++)
+ {
+ pin_mask = BIT(i);
+ if ((io_mask_low & pin_mask) != 0 ||
+ (io_mask_high & pin_mask) != 0)
+ {
+ ret = esp_rtcio_config_gpio(i, ESP_RTC_GPIO_MODE_INPUT_OUTPUT);
+ if (ret != OK)
+ {
+ ferr("Failed to configure pin: %d\n", i);
+ return ret;
+ }
+
+ wake_up_type = GPIO_INTR_HIGH_LEVEL;
+ if ((io_mask_low & pin_mask) != 0)
+ {
+ wake_up_type = GPIO_INTR_LOW_LEVEL;
+ }
+
+ rtc_gpio_wakeup_enable(i, wake_up_type);
+ }
+ }
+
+ return OK;
+}
+#endif
+
/****************************************************************************
* Name: esp_ulp_ioctl
*
@@ -220,11 +463,30 @@ int esp_ulp_load_bin(const char *buffer, size_t buflen)
* None
*
* Returned Value:
- * None
+ * Returns OK on success; a negated errno value on failure
*
****************************************************************************/
-void esp_ulp_init(void)
+int esp_ulp_init(void)
{
+ int ret = OK;
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_IO
+ ret = esp_ulp_wakeup_io_init();
+ if (ret != OK)
+ {
+ return ret;
+ }
+
+#endif
+#ifdef CONFIG_ESPRESSIF_ULP_WAKEUP_LP_UART
+ esp_ulp_wakeup_lpuart_init();
+ if (ret != OK)
+ {
+ ferr("Failed to LP UART wakeup\n");
+ return ret;
+ }
+
+#endif
esp_ulp_register();
+ return ret;
}
diff --git a/arch/risc-v/src/common/espressif/esp_ulp.h b/arch/risc-v/src/common/espressif/esp_ulp.h
index 9371bee6ad3..d71af22dd36 100644
--- a/arch/risc-v/src/common/espressif/esp_ulp.h
+++ b/arch/risc-v/src/common/espressif/esp_ulp.h
@@ -30,6 +30,8 @@
#include <nuttx/config.h>
#include <sys/types.h>
+#include "espressif/esp_rtc_gpio.h"
+
#ifndef __ASSEMBLY__
#undef EXTERN
@@ -72,11 +74,11 @@ int esp_ulp_load_bin(const char *buffer, size_t buflen);
* None
*
* Returned Value:
- * None
+ * Returns OK on success; a negated errno value on failure
*
****************************************************************************/
-void esp_ulp_init(void);
+int esp_ulp_init(void);
#ifdef __cplusplus
}
(nuttx) 02/03: board/risc-v/espressif: Add ULP wakeup modes board support
Posted by si...@apache.org.
This is an automated email from the ASF dual-hosted git repository.
simbit18 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git
commit 2eb686f72fae057e8863ce18de14cb09d0e35eb1
Author: Eren Terzioglu <er...@espressif.com>
AuthorDate: Fri Apr 17 11:02:36 2026 +0200
board/risc-v/espressif: Add ULP wakeup modes board support
Add ULP wakeup modes board support for esp32[-c6|-p4]
Signed-off-by: Eren Terzioglu <er...@espressif.com>
---
boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_bringup.c | 12 +++++++++---
.../esp32p4/esp32p4-function-ev-board/src/esp32p4_bringup.c | 12 +++++++++---
2 files changed, 18 insertions(+), 6 deletions(-)
diff --git a/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_bringup.c b/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_bringup.c
index 6340b3cf730..d0f08c72046 100644
--- a/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_bringup.c
+++ b/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_bringup.c
@@ -543,11 +543,17 @@ int esp_bringup(void)
* peripherals to use supported peripherals properly on ULP core
*/
- esp_ulp_init();
-
+ ret = esp_ulp_init();
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: esp_ulp_init failed: %d\n", ret);
+ }
+ else
+ {
# ifdef CONFIG_ESPRESSIF_ULP_USE_TEST_BIN
- esp_ulp_load_bin((char *)esp_ulp_bin, esp_ulp_bin_len);
+ esp_ulp_load_bin((char *)esp_ulp_bin, esp_ulp_bin_len);
# endif
+ }
#endif
#ifdef CONFIG_NET_OA_TC6
diff --git a/boards/risc-v/esp32p4/esp32p4-function-ev-board/src/esp32p4_bringup.c b/boards/risc-v/esp32p4/esp32p4-function-ev-board/src/esp32p4_bringup.c
index ca25f2aee8f..318a19bc152 100644
--- a/boards/risc-v/esp32p4/esp32p4-function-ev-board/src/esp32p4_bringup.c
+++ b/boards/risc-v/esp32p4/esp32p4-function-ev-board/src/esp32p4_bringup.c
@@ -459,11 +459,17 @@ int esp_bringup(void)
* peripherals to use supported peripherals properly on ULP core
*/
- esp_ulp_init();
-
+ ret = esp_ulp_init();
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: esp_ulp_init failed: %d\n", ret);
+ }
+ else
+ {
# ifdef CONFIG_ESPRESSIF_ULP_USE_TEST_BIN
- esp_ulp_load_bin((char *)esp_ulp_bin, esp_ulp_bin_len);
+ esp_ulp_load_bin((char *)esp_ulp_bin, esp_ulp_bin_len);
# endif
+ }
#endif
/* If we got here then perhaps not all initialization was successful, but