From b1f68685ec462bcde572455c262cb78a53112816 Mon Sep 17 00:00:00 2001
From: Damien George
Date: Mon, 13 Apr 2015 16:59:05 +0100
Subject: stmhal: In USB HID driver, make polling interval configurable.

When setting usb_mode to "HID", hid config object now has
polling-interval (in ms) as the 4th element.  It mmust now be a 5-tuple
of the form:

(subclass, protocol, max_packet_len, polling_interval, report_desc)

The mouse and keyboard defaults have polling interval at 8ms.
---
 stmhal/usbdev/class/inc/usbd_cdc_msc_hid0.h | 1 +
 stmhal/usbdev/class/src/usbd_cdc_msc_hid.c  | 2 ++
 2 files changed, 3 insertions(+)

(limited to 'stmhal/usbdev')

diff --git a/stmhal/usbdev/class/inc/usbd_cdc_msc_hid0.h b/stmhal/usbdev/class/inc/usbd_cdc_msc_hid0.h
index 7bf2cf955..bc9d0d21a 100644
--- a/stmhal/usbdev/class/inc/usbd_cdc_msc_hid0.h
+++ b/stmhal/usbdev/class/inc/usbd_cdc_msc_hid0.h
@@ -44,6 +44,7 @@ typedef struct _USBD_HID_ModeInfoTypeDef {
     uint8_t subclass; // 0=no sub class, 1=boot
     uint8_t protocol; // 0=none, 1=keyboard, 2=mouse
     uint8_t max_packet_len; // only support up to 255
+    uint8_t polling_interval; // in units of 1ms
     uint8_t report_desc_len;
     const uint8_t *report_desc;
 } USBD_HID_ModeInfoTypeDef;
diff --git a/stmhal/usbdev/class/src/usbd_cdc_msc_hid.c b/stmhal/usbdev/class/src/usbd_cdc_msc_hid.c
index 8af2124dc..bbb666861 100644
--- a/stmhal/usbdev/class/src/usbd_cdc_msc_hid.c
+++ b/stmhal/usbdev/class/src/usbd_cdc_msc_hid.c
@@ -38,6 +38,7 @@
 #define HID_DESC_OFFSET_REPORT_DESC_LEN (16)
 #define HID_DESC_OFFSET_MAX_PACKET_LO (22)
 #define HID_DESC_OFFSET_MAX_PACKET_HI (23)
+#define HID_DESC_OFFSET_POLLING_INTERVAL (24)
 #define HID_SUBDESC_LEN (9)
 
 #define CDC_IFACE_NUM_ALONE (0)
@@ -605,6 +606,7 @@ int USBD_SelectMode(uint32_t mode, USBD_HID_ModeInfoTypeDef *hid_info) {
         hid_desc[HID_DESC_OFFSET_REPORT_DESC_LEN] = hid_info->report_desc_len;
         hid_desc[HID_DESC_OFFSET_MAX_PACKET_LO] = hid_info->max_packet_len;
         hid_desc[HID_DESC_OFFSET_MAX_PACKET_HI] = 0;
+        hid_desc[HID_DESC_OFFSET_POLLING_INTERVAL] = hid_info->polling_interval;
         hid_report_desc = hid_info->report_desc;
     }
 
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