usbstorage: explictly set usb source mode when accessing usb storage

Activate usb source mode when navigating the menus to try to access usb
storage, rather than setting when devices are detected on the usb-port.

Author: Jamie C. Driver

main/power/jadev20.inc

@@ -38,8 +38,8 @@
 #define SGM7220_REG_TYPE_SOURCE 0x01
 #define SGM7220_REG_TYPE_SINK 0x02
 
+#ifdef USB_DETECTION
 #define USB_INT_PIN (gpio_num_t)18
-
 static SemaphoreHandle_t usb_semaphore;
 
 static void IRAM_ATTR usb_gpio_isr_handler(void* arg)
@@ -76,15 +76,13 @@ void usb_detection_task(void* param)
         }
     }
 }
+#endif // USB_DETECTION
 
 // Exported funtions
 esp_err_t power_init(void)
 {
     I2C_CHECK_RET(_power_i2c_init());
 
-    usb_semaphore = xSemaphoreCreateBinary();
-    JADE_ASSERT(usb_semaphore);
-
     // Need read twice for some reason - first one always fails, second should work!
     uint8_t data;
     _power_master_read_slave(PMIC_ADDR, PMIC_REG_FW_VERSION, &data, 1);
@@ -94,23 +92,28 @@ esp_err_t power_init(void)
     // set to sink mode by default
     I2C_LOG_ANY_ERROR(_power_write_command(PMIC_ADDR, PMIC_REG_OTG, 0x00));
 
+#ifdef USB_DETECTION
+    usb_semaphore = xSemaphoreCreateBinary();
+    JADE_ASSERT(usb_semaphore);
+
     // Do usb detection for power boost
     gpio_set_intr_type(USB_INT_PIN, GPIO_INTR_NEGEDGE);
     I2C_CHECK_RET(gpio_install_isr_service(0));
     gpio_isr_handler_add(USB_INT_PIN, usb_gpio_isr_handler, (void*)USB_INT_PIN);
 
-    uint8_t sgm_id[8] = { 0 };
-    I2C_CHECK_RET(_power_master_read_slave(SGM7220_ADDR, 0x00, &sgm_id[0], sizeof(sgm_id)));
-    JADE_LOGI("SGM7220 Device ID: %02x %02x %02x %02x %02x %02x %02x %02x", sgm_id[7], sgm_id[6], sgm_id[5], sgm_id[4],
-        sgm_id[3], sgm_id[2], sgm_id[1], sgm_id[0]);
-    I2C_CHECK_RET(_power_write_command(SGM7220_ADDR, 0x0A, 0x32));
-
     const BaseType_t retval = xTaskCreatePinnedToCore(
         usb_detection_task, "usbdt", 1024 * 4, NULL, JADE_TASK_PRIO_IDLETIMER, NULL, JADE_CORE_GUI);
 
     if (retval != pdPASS) {
         return ESP_FAIL;
     }
+#endif
+
+    uint8_t sgm_id[8] = { 0 };
+    I2C_CHECK_RET(_power_master_read_slave(SGM7220_ADDR, 0x00, &sgm_id[0], sizeof(sgm_id)));
+    JADE_LOGI("SGM7220 Device ID: %02x %02x %02x %02x %02x %02x %02x %02x", sgm_id[7], sgm_id[6], sgm_id[5], sgm_id[4],
+        sgm_id[3], sgm_id[2], sgm_id[1], sgm_id[0]);
+    I2C_CHECK_RET(_power_write_command(SGM7220_ADDR, 0x0A, 0x32));
 
 #ifdef CONFIG_SECURE_BOOT
     // Ensure 'download mode' permanently disabled

main/usbhmsc/usbhmsc.c

@@ -256,7 +256,11 @@ bool usbstorage_start(void)
     JADE_SEMAPHORE_TAKE(interface_semaphore);
     JADE_ASSERT(!usbstorage_is_enabled);
     JADE_ASSERT(!main_task);
-    /* enable_usb_host(); */
+
+    // Power any connected device
+    JADE_ASSERT(!usb_connected());
+    enable_usb_host();
+
     usbstorage_is_enabled = true;
     const BaseType_t task_created = xTaskCreatePinnedToCore(
         usbstorage_task, "usb_storage", 2 * 1024, NULL, JADE_TASK_PRIO_USB, &main_task, JADE_CORE_SECONDARY);
@@ -278,7 +282,10 @@ void usbstorage_stop(void)
 
     vTaskDelete(main_task);
     main_task = NULL;
-    // disable_usb_host();
+
+    // Stop powering any connected usb device
+    disable_usb_host();
+
     JADE_SEMAPHORE_GIVE(interface_semaphore);
 }
 

main/usbhmsc/usbmode.c

@@ -4,6 +4,7 @@
 #include "../jade_tasks.h"
 #include "../jade_wally_verify.h"
 #include "../keychain.h"
+#include "../power.h"
 #include "../process.h"
 #include "../serial.h"
 #include "../ui.h"
@@ -284,6 +285,12 @@ static bool handle_usbstorage_action(
     JADE_ASSERT(usbstorage_action);
     // extra_path is optional
 
+    if (usb_connected()) {
+        const char* message[] = { "Disconnect USB power and", "connect a storage device" };
+        await_error_activity(message, 2);
+        return false;
+    }
+
     // Stop normal serial usb and start usbstorage
     display_processing_message_activity();
     serial_stop();