esp32[c3]: Add BLE support

Documentation/platforms/risc-v/esp32c3/boards/esp32c3-generic/index.rst

@@ -53,6 +53,74 @@ All of the configurations presented below can be tested by running the following
 Where <config_name> is the name of board configuration you want to use, i.e.: nsh, buttons, wifi...
 Then use a serial console terminal like ``picocom`` configured to 115200 8N1.
 
+ble
+---
+
+This configuration is used to enable the Bluetooth Low Energy (BLE) of
+ESP32-C3 chip.
+
+To test it, just run the following commands below.
+
+Confirm that bnep interface exist::
+
+    nsh> ifconfig
+    bnep0   Link encap:UNSPEC at DOWN
+        inet addr:0.0.0.0 DRaddr:0.0.0.0 Mask:0.0.0.0
+
+Get basic information from it::
+
+    nsh> bt bnep0 info
+    Device: bnep0
+    BDAddr: 86:f7:03:09:41:4d
+    Flags:  0000
+    Free:   20
+      ACL:  20
+      SCO:  0
+    Max:
+      ACL:  24
+      SCO:  0
+    MTU:
+      ACL:  70
+      SCO:  70
+    Policy: 0
+    Type:   0
+
+Start the scanning process::
+
+    nsh> bt bnep0 scan start
+
+Wait a little bit before stopping it.
+
+Then after some minutes stop it::
+
+    nsh> bt bnep0 scan stop
+
+Get the list of BLE devices found around you::
+
+    nsh> bt bnep0 scan get
+    Scan result:
+    1.     addr:           d7:c4:e6:xx:xx:xx type: 0
+           rssi:            -62
+           response type:   4
+           advertiser data: 10 09 4d 69 20 XX XX XX XX XX XX XX XX XX XX 20                      e
+    2.     addr:           cb:23:18:xx:xx:xx type: 0
+           rssi:            -60
+           response type:   0
+           advertiser data: 02 01 06 1b ff XX XX XX ff ff ff ff ff ff ff ff                      8
+    3.     addr:           cb:23:18:xx:xx:xx type: 0
+           rssi:            -60
+           response type:   4
+           advertiser data: 10 09 4d 69 20 XX XX XX XX XX XX XX XX XX XX 20                      e
+    4.     addr:           d7:c4:e6:xx:xx:xx type: 0
+           rssi:            -62
+           response type:   0
+           advertiser data: 02 01 06 1b ff XX XX XX ff ff ff ff ff ff ff ff                      e
+    5.     addr:           d7:c4:e6:xx:xx:xx type: 0
+           rssi:            -62
+           response type:   4
+           advertiser data: 10 09 4d 69 20 XX XX XX XX XX XX XX XX XX XX 20                      e
+    nsh>
+
 bmp180
 ------
 

arch/risc-v/src/common/espressif/Kconfig

@@ -465,6 +465,14 @@ config ESPRESSIF_WIFI
 	---help---
 		Enable Wi-Fi support
 
+config ESPRESSIF_BLE
+	bool "BLE"
+	depends on ESPRESSIF_ESP32C3
+	default n
+	select ESP_WIRELESS
+	---help---
+		Enable BLE support
+
 config ESP_COEX_SW_COEXIST_ENABLE
 	bool "Software WiFi/Bluetooth/IEEE 802.15.4 coexistence"
 	depends on (ESPRESSIF_WIFI && ESPRESSIF_BLE) || \
@@ -478,6 +486,13 @@ config ESP_COEX_SW_COEXIST_ENABLE
 		If only Bluetooth is used, it is recommended to disable this option to reduce binary file
 		size.
 
+menuconfig ESPRESSIF_WIFI_BT_COEXIST
+	bool "Wi-Fi and BT coexist"
+	default y if ESPRESSIF_WIFI && ESPRESSIF_BLE
+	default n
+	depends on ESPRESSIF_WIFI && ESPRESSIF_BLE
+	select ESPRESSIF_WIFI_STA_DISCONNECT_PM
+
 config ESP_MCPWM
 	bool "Motor Control PWM (MCPWM)"
 	default n
@@ -933,6 +948,30 @@ endchoice # ESP_POWER_SAVE_MODE
 
 endmenu # ESPRESSIF_WIFI
 
+menu "BLE Configuration"
+	depends on ESPRESSIF_BLE
+
+config ESPRESSIF_BLE_TTY_NAME
+	string "BLE TTY device name"
+	default "/dev/ttyHCI0"
+	depends on UART_BTH4
+
+config ESPRESSIF_BLE_TASK_STACK_SIZE
+	int "Controller task stack size"
+	default 4096
+
+config ESPRESSIF_BLE_TASK_PRIORITY
+	int "Controller task priority"
+	default 253
+
+config ESPRESSIF_BLE_INTERRUPT_SAVE_STATUS
+	int "Number of interrupt save status"
+	default 3
+	---help---
+		Number of interrupt save status variables to keep track. Increase it if any related bug is found.
+
+endmenu # BLE Configuration
+
 menu "UART Configuration"
 	depends on ESPRESSIF_UART
 

arch/risc-v/src/common/espressif/Make.defs

@@ -120,8 +120,8 @@ ifeq ($(CONFIG_ESP_WIRELESS),y)
 	ifeq ($(CONFIG_ESPRESSIF_WIFI),y)
 		CHIP_CSRCS += esp_wifi_init.c
 		CHIP_CSRCS += esp_wlan.c
-		CHIP_CSRCS += esp_wifi_utils.c
 	endif
+	CHIP_CSRCS += esp_wifi_utils.c
 endif
 
 ifeq ($(CONFIG_ESP_MCPWM),y)
@@ -136,7 +136,7 @@ endif
 
 ESP_HAL_3RDPARTY_REPO   = esp-hal-3rdparty
 ifndef ESP_HAL_3RDPARTY_VERSION
-	ESP_HAL_3RDPARTY_VERSION = b4c723a119344b4b71d69819019d55637fb570fd
+	ESP_HAL_3RDPARTY_VERSION = ca869dd97ed2c01187b85b759c0d6edb27c12c21
 endif
 
 ifndef ESP_HAL_3RDPARTY_URL
@@ -168,7 +168,7 @@ chip/$(ESP_HAL_3RDPARTY_REPO):
 	$(Q) git -C chip/$(ESP_HAL_3RDPARTY_REPO) checkout --quiet $(ESP_HAL_3RDPARTY_VERSION)
 ifeq ($(CONFIG_ESP_WIRELESS),y)
 	$(Q) echo "Espressif HAL for 3rd Party Platforms: initializing submodules..."
-	$(Q) git -C chip/$(ESP_HAL_3RDPARTY_REPO) submodule --quiet update --init $(GIT_DEPTH_PARAMETER) components/mbedtls/mbedtls components/esp_phy/lib components/esp_wifi/lib components/esp_coex/lib
+	$(Q) git -C chip/$(ESP_HAL_3RDPARTY_REPO) submodule --quiet update --init $(GIT_DEPTH_PARAMETER) components/mbedtls/mbedtls components/esp_phy/lib components/esp_wifi/lib components/bt/controller/lib_esp32c3_family components/esp_coex/lib
 	$(Q) git -C chip/$(ESP_HAL_3RDPARTY_REPO)/components/mbedtls/mbedtls reset --quiet --hard
 	$(Q) echo "Applying patches..."
 	$(Q) cd chip/$(ESP_HAL_3RDPARTY_REPO)/components/mbedtls/mbedtls && git apply ../../../nuttx/patches/components/mbedtls/mbedtls/*.patch

arch/risc-v/src/common/espressif/Wireless.mk

@@ -24,6 +24,7 @@ INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)nuttx$(DELIM)$(CHIP_SERIES)$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)nuttx$(DELIM)include$(DELIM)esp_wifi
 
+EXTRA_LIBPATHS += -L $(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)bt$(DELIM)controller$(DELIM)lib_esp32c3_family$(DELIM)$(CHIP_SERIES)
 EXTRA_LIBPATHS += -L $(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_coex$(DELIM)lib$(DELIM)$(CHIP_SERIES)
 EXTRA_LIBPATHS += -L $(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)lib$(DELIM)$(CHIP_SERIES)
 EXTRA_LIBPATHS += -L $(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_wifi$(DELIM)lib$(DELIM)$(CHIP_SERIES)

arch/risc-v/src/common/espressif/esp_wifi_utils.c

@@ -33,6 +33,7 @@
 #include <nuttx/kmalloc.h>
 #include <nuttx/wireless/wireless.h>
 
+#ifdef CONFIG_ESPRESSIF_WIFI
 #include "esp_wifi_adapter.h"
 
 #include "esp_log.h"
@@ -44,7 +45,9 @@
 #include "esp_wpa.h"
 #include "rom/ets_sys.h"
 #include "soc/soc_caps.h"
+#endif /* CONFIG_ESPRESSIF_WIFI */
 
+#include "esp_err.h"
 #include "esp_wifi_utils.h"
 
 /****************************************************************************
@@ -104,6 +107,8 @@ static uint8_t g_channel_list[CHANNEL_MAX_NUM];
  * Public Functions
  ****************************************************************************/
 
+#ifdef CONFIG_ESPRESSIF_WIFI
+
 /****************************************************************************
  * Name: esp_wifi_start_scan
  *
@@ -573,6 +578,7 @@ void esp_wifi_scan_event_parse(void)
   priv->scan_status = ESP_SCAN_DONE;
   nxsem_post(&priv->scan_signal);
 }
+#endif /* CONFIG_ESPRESSIF_WIFI */
 
 /****************************************************************************
  * Name: esp_wifi_to_errno

arch/risc-v/src/common/espressif/esp_wifi_utils.h

@@ -45,6 +45,8 @@ extern "C"
  * Public Function Prototypes
  ****************************************************************************/
 
+#ifdef CONFIG_ESPRESSIF_WIFI
+
 /****************************************************************************
  * Name: esp_wifi_start_scan
  *
@@ -95,6 +97,8 @@ int esp_wifi_get_scan_results(struct iwreq *iwr);
 
 void esp_wifi_scan_event_parse(void);
 
+#endif
+
 /****************************************************************************
  * Name: esp_wifi_to_errno
  *

arch/risc-v/src/esp32c3/Make.defs

@@ -28,4 +28,9 @@ CHIP_CSRCS += esp_coex_adapter.c esp_wifi_adapter.c
 EXTRA_LIBS += -lcore -lnet80211 -lpp
 endif
 
+ifeq ($(CONFIG_ESPRESSIF_BLE),y)
+CHIP_CSRCS += esp_ble.c esp_ble_adapter.c esp_wireless.c
+EXTRA_LIBS +=  -lbtbb -lbtdm_app
+endif
+
 CFLAGS += ${DEFINE_PREFIX}_RETARGETABLE_LOCKING