libusb: fix pma_write for g4

BossHobby · May 8, 2024 · 6b1abdc · 6b1abdc
1 parent c645892
commit 6b1abdc
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/libusb_stm32/src/usbd_stm32l433_devfs.c b/lib/libusb_stm32/src/usbd_stm32l433_devfs.c
@@ -336,7 +336,7 @@ static int32_t ep_read(uint8_t ep, void *buf, uint16_t blen) {
 }
 
 static void pma_write(const uint8_t *buf, uint16_t blen, pma_rec *tx) {
-    uint16_t *pma = (void*)(USB_PMAADDR + tx->addr);
+    volatile uint16_t *pma = (void*)(USB_PMAADDR + tx->addr);
     tx->cnt = blen;
     while (blen > 1) {
         *pma++ = buf[1] << 8 | buf[0];