diff options
Diffstat (limited to 'os/hal')
| -rw-r--r-- | os/hal/platforms/STM32/USBv1/usb_lld.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/os/hal/platforms/STM32/USBv1/usb_lld.c b/os/hal/platforms/STM32/USBv1/usb_lld.c index aacdbfbf6..121e82f43 100644 --- a/os/hal/platforms/STM32/USBv1/usb_lld.c +++ b/os/hal/platforms/STM32/USBv1/usb_lld.c @@ -290,7 +290,6 @@ CH_IRQ_HANDLER(STM32_USB1_HP_HANDLER) { */
CH_IRQ_HANDLER(STM32_USB1_LP_HANDLER) {
uint32_t istr;
- size_t n;
USBDriver *usbp = &USBD1;
CH_IRQ_PROLOGUE();
@@ -339,17 +338,19 @@ CH_IRQ_HANDLER(STM32_USB1_LP_HANDLER) { /* Endpoint events handling.*/
while (istr & ISTR_CTR) {
+ size_t n;
uint32_t ep;
uint32_t epr = STM32_USB->EPR[ep = istr & ISTR_EP_ID_MASK];
const USBEndpointConfig *epcp = usbp->epc[ep];
if (epr & EPR_CTR_TX) {
+ size_t transmitted;
/* IN endpoint, transmission.*/
EPR_CLEAR_CTR_TX(ep);
- n = (size_t)USB_GET_DESCRIPTOR(ep)->TXCOUNT0;
- epcp->in_state->txcnt += n;
- epcp->in_state->txsize -= n;
+ transmitted = (size_t)USB_GET_DESCRIPTOR(ep)->TXCOUNT0;
+ epcp->in_state->txcnt += transmitted;
+ epcp->in_state->txsize -= transmitted;
if (epcp->in_state->txsize > 0) {
/* Transfer not completed, there are more packets to send.*/
if (epcp->in_state->txsize > epcp->in_maxsize)
@@ -362,7 +363,7 @@ CH_IRQ_HANDLER(STM32_USB1_LP_HANDLER) { epcp->in_state->mode.queue.txqueue,
n);
else {
- epcp->in_state->mode.linear.txbuf += n;
+ epcp->in_state->mode.linear.txbuf += transmitted;
usb_packet_write_from_buffer(USB_GET_DESCRIPTOR(ep),
epcp->in_state->mode.linear.txbuf,
n);
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