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Initial work was for unsigned-signed comparison fix. Current work fixes negative number issues 

Compile: stm32f7xx_hal_pcd.c
../targets/TARGET_STM/TARGET_STM32F7/device/stm32f7xx_hal_pcd.c: In function 'PCD_WriteEmptyTxFifo':
../targets/TARGET_STM/TARGET_STM32F7/device/stm32f7xx_hal_pcd.c:1310:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (len > ep->maxpacket)
           ^
../targets/TARGET_STM/TARGET_STM32F7/device/stm32f7xx_hal_pcd.c:1325:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (len > ep->maxpacket)
             ^
pull/6609/head
Paul Thompson 2018-04-11 14:26:23 -07:00
parent a463b075db
commit 430784b084
1 changed files with 46 additions and 40 deletions
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84
targets/TARGET_STM/TARGET_STM32F7/device/stm32f7xx_hal_pcd.c
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@ -1298,50 +1298,56 @@ PCD_StateTypeDef HAL_PCD_GetState(PCD_HandleTypeDef *hpcd)
*/ */
static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum) static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum)
{ {
USB_OTG_GlobalTypeDef *USBx = hpcd->Instance; USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
USB_OTG_EPTypeDef *ep; USB_OTG_EPTypeDef *ep;
int32_t len = 0; uint32_t len;
uint32_t len32b; uint32_t len32b;
uint32_t fifoemptymsk = 0; uint32_t fifoemptymsk = 0U;
ep = &hpcd->IN_ep[epnum]; ep = &hpcd->IN_ep[epnum];
len = ep->xfer_len - ep->xfer_count;
if (len > ep->maxpacket) if (ep->xfer_len >= ep->xfer_count)
{
len = ep->maxpacket;
}
len32b = (len + 3) / 4;
while ( (USBx_INEP(epnum)->DTXFSTS & USB_OTG_DTXFSTS_INEPTFSAV) > len32b &&
ep->xfer_count < ep->xfer_len &&
ep->xfer_len != 0)
{
/* Write the FIFO */
len = ep->xfer_len - ep->xfer_count;
if (len > ep->maxpacket)
{ {
len = ep->maxpacket; len = ep->xfer_len - ep->xfer_count;
if (len > ep->maxpacket)
{
len = ep->maxpacket;
}
len32b = (len + 3U) / 4U;
while (((USBx_INEP(epnum)->DTXFSTS & USB_OTG_DTXFSTS_INEPTFSAV) > len32b) &&
(ep->xfer_count < ep->xfer_len) &&
(ep->xfer_len != 0U))
{
/* Write the FIFO */
if (ep->xfer_len >= ep->xfer_count)
{
len = ep->xfer_len - ep->xfer_count;
if (len > ep->maxpacket)
{
len = ep->maxpacket;
}
len32b = (len + 3U) / 4U;
USB_WritePacket(USBx, ep->xfer_buff, epnum, len, hpcd->Init.dma_enable);
ep->xfer_buff += len;
ep->xfer_count += len;
}
}
}
else
{
fifoemptymsk = 0x1U << epnum;
/* MBED */
atomic_clr_u32(&USBx_DEVICE->DIEPEMPMSK, fifoemptymsk);
/* MBED */
} }
len32b = (len + 3) / 4;
USB_WritePacket(USBx, ep->xfer_buff, epnum, len, hpcd->Init.dma_enable); return HAL_OK;
ep->xfer_buff += len;
ep->xfer_count += len;
}
if(len <= 0)
{
fifoemptymsk = 0x1 << epnum;
atomic_clr_u32(&USBx_DEVICE->DIEPEMPMSK, fifoemptymsk); // MBED: changed
}
return HAL_OK;
} }
/** /**