diff options
| author | Damien George <damien.p.george@gmail.com> | 2016-01-09 21:59:15 +0000 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2016-01-29 15:21:43 +0000 |
| commit | d3631339176b768ce1ffdc535223385245ff906b (patch) | |
| tree | 51f2b5063787735a3ec5f936512a0599b1d390ec /stmhal/usbd_conf.c | |
| parent | 7417ccfb0d27c7c09b5ed6468a9e3ca729af41bb (diff) | |
stmhal: Make USB CDC driver use SOF instead of TIM3 for outgoing data.
Previous to this patch the USB CDC driver used TIM3 to trigger the
sending of outgoing data over USB serial. This patch changes the
behaviour so that the USB SOF interrupt is used to trigger the processing
of the sending. This reduces latency and increases bandwidth of outgoing
data.
Thanks to Martin Fischer, aka @hoihu, for the idea and initial prototype.
See PR #1713.
Diffstat (limited to 'stmhal/usbd_conf.c')
| -rw-r--r-- | stmhal/usbd_conf.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/stmhal/usbd_conf.c b/stmhal/usbd_conf.c index c6b049874..5ff824071 100644 --- a/stmhal/usbd_conf.c +++ b/stmhal/usbd_conf.c @@ -276,10 +276,13 @@ void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum) * @param hpcd: PCD handle
* @retval None
*/
+/*
+This is now handled by the USB CDC interface.
void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
{
USBD_LL_SOF(hpcd->pData);
}
+*/
/**
* @brief Reset callback.
@@ -394,7 +397,7 @@ if (pdev->id == USB_PHY_FS_ID) pcd_fs_handle.Init.dma_enable = 0;
pcd_fs_handle.Init.low_power_enable = 0;
pcd_fs_handle.Init.phy_itface = PCD_PHY_EMBEDDED;
- pcd_fs_handle.Init.Sof_enable = 0;
+ pcd_fs_handle.Init.Sof_enable = 1;
pcd_fs_handle.Init.speed = PCD_SPEED_FULL;
#if !defined(MICROPY_HW_USB_VBUS_DETECT_PIN)
pcd_fs_handle.Init.vbus_sensing_enable = 0; // No VBUS Sensing on USB0
|