From 8d8fdcb4bec5024503b636bcdbad244bef4e6576 Mon Sep 17 00:00:00 2001
From: Tony Abboud
Date: Sun, 30 Aug 2015 17:20:38 -0400
Subject: stmhal: add option to query for the current usb mode

Fetch the current usb mode and return a string representation when
pyb.usb_mode() is called with no args. The possible string values are interned
as qstr's. None will be returned if an incorrect mode is set.
---
 stmhal/usbdev/class/inc/usbd_cdc_msc_hid.h | 2 ++
 stmhal/usbdev/class/src/usbd_cdc_msc_hid.c | 5 +++++
 2 files changed, 7 insertions(+)

(limited to 'stmhal/usbdev/class')

diff --git a/stmhal/usbdev/class/inc/usbd_cdc_msc_hid.h b/stmhal/usbdev/class/inc/usbd_cdc_msc_hid.h
index 52d845b24..248ce17f3 100644
--- a/stmhal/usbdev/class/inc/usbd_cdc_msc_hid.h
+++ b/stmhal/usbdev/class/inc/usbd_cdc_msc_hid.h
@@ -94,6 +94,8 @@ extern USBD_ClassTypeDef USBD_CDC_MSC_HID;
 
 // returns 0 on success, -1 on failure
 int USBD_SelectMode(uint32_t mode, USBD_HID_ModeInfoTypeDef *hid_info);
+// returns the current usb mode
+uint8_t USBD_GetMode();
 
 uint8_t USBD_CDC_RegisterInterface  (USBD_HandleTypeDef   *pdev, USBD_CDC_ItfTypeDef *fops);
 uint8_t USBD_CDC_SetTxBuffer  (USBD_HandleTypeDef   *pdev, uint8_t  *pbuff, uint16_t length);
diff --git a/stmhal/usbdev/class/src/usbd_cdc_msc_hid.c b/stmhal/usbdev/class/src/usbd_cdc_msc_hid.c
index bbb666861..d50934ada 100644
--- a/stmhal/usbdev/class/src/usbd_cdc_msc_hid.c
+++ b/stmhal/usbdev/class/src/usbd_cdc_msc_hid.c
@@ -559,6 +559,11 @@ __ALIGN_BEGIN const uint8_t USBD_HID_KEYBOARD_ReportDesc[USBD_HID_KEYBOARD_REPOR
     0xC0            // End Collection
 };
 
+// return the saved usb mode
+uint8_t USBD_GetMode() {
+    return usbd_mode;
+}
+
 int USBD_SelectMode(uint32_t mode, USBD_HID_ModeInfoTypeDef *hid_info) {
     // save mode
     usbd_mode = mode;
-- 
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