drivers: wifi: eswifi: Add debug shell

Add a esWiFi shell for device specific controls.
For now used to send at commands.

Signed-off-by: Loic Poulain <[email protected]>

Author: Loic Poulain

drivers/wifi/eswifi/CMakeLists.txt

@@ -14,5 +14,8 @@ if(CONFIG_WIFI_ESWIFI)
     eswifi_offload.c
     eswifi_socket.c
     )
+
+  zephyr_sources_ifdef(CONFIG_WIFI_ESWIFI_SHELL eswifi_shell.c)
+
 zephyr_sources_ifdef(CONFIG_NET_SOCKETS_OFFLOAD eswifi_socket_offload.c)
 endif()

drivers/wifi/eswifi/Kconfig.eswifi

@@ -24,4 +24,10 @@ config WIFI_ESWIFI_THREAD_PRIO
 	  This option sets the priority of the esWiFi threads.
 	  Do not touch it unless you know what you are doing.
 
+config WIFI_ESWIFI_SHELL
+	bool "esWiFi shell"
+	depends on SHELL
+	help
+	  Enable esWiFi shell
+
 endif

drivers/wifi/eswifi/eswifi.h

@@ -144,4 +144,10 @@ int __eswifi_bind(struct eswifi_dev *eswifi, struct eswifi_off_socket *socket,
 int eswifi_socket_offload_init(struct eswifi_dev *leswifi);
 #endif
 
+#if defined(CONFIG_WIFI_ESWIFI_SHELL)
+void eswifi_shell_register(struct eswifi_dev *dev);
+#else
+#define eswifi_shell_register(dev)
+#endif
+
 #endif

drivers/wifi/eswifi/eswifi_core.c

@@ -671,6 +671,8 @@ static int eswifi_init(struct device *dev)
 
 	k_work_init(&eswifi->request_work, eswifi_request_work);
 
+	eswifi_shell_register(eswifi);
+
 	return 0;
 }
 

drivers/wifi/eswifi/eswifi_shell.c

@@ -0,0 +1,61 @@
+/**
+ * Copyright (c) 2020 Linaro
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <kernel.h>
+#include <shell/shell.h>
+
+#include "eswifi.h"
+
+static struct eswifi_dev *eswifi;
+
+void eswifi_shell_register(struct eswifi_dev *dev)
+{
+	/* only one instance supported */
+	if (eswifi) {
+		return;
+	}
+
+	eswifi = dev;
+}
+
+static int eswifi_shell_atcmd(const struct shell *shell, size_t argc,
+			      char **argv)
+{
+	int i;
+
+	if (eswifi == NULL) {
+		shell_print(shell, "no eswifi device registered");
+		return -ENOEXEC;
+	}
+
+	if (argc < 2) {
+		shell_help(shell);
+		return -ENOEXEC;
+	}
+
+	eswifi_lock(eswifi);
+
+	memset(eswifi->buf, 0, sizeof(eswifi->buf));
+	for (i = 1; i < argc; i++) {
+		strcat(eswifi->buf, argv[i]);
+	}
+	strcat(eswifi->buf, "\r");
+
+	shell_print(shell, "> %s", eswifi->buf);
+	eswifi_at_cmd(eswifi, eswifi->buf);
+	shell_print(shell, "< %s", eswifi->buf);
+
+	eswifi_unlock(eswifi);
+
+	return 0;
+}
+
+SHELL_STATIC_SUBCMD_SET_CREATE(eswifi_shell,
+	SHELL_CMD(atcmd, NULL, "<atcmd>", eswifi_shell_atcmd),
+	SHELL_SUBCMD_SET_END /* Array terminated. */
+);
+
+SHELL_CMD_REGISTER(eswifi, &eswifi_shell, "esWiFi debug shell", NULL);