diff options
Diffstat (limited to 'src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c')
| -rw-r--r-- | src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c b/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c index 9ce37f992..4e31c99fa 100644 --- a/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c +++ b/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c @@ -215,19 +215,19 @@ void dcd_init(uint8_t rhport) /* The RM mentions to use a special ordering of PDWN and FRES, but this isn't done in HAL. * Here, the RM is followed. */ - for (uint32_t i = 0; i < 200; i++) { // should be a few us + for (volatile uint32_t i = 0; i < 200; i++) { // should be a few us asm("NOP"); } // Perform USB peripheral reset USB->CNTR = USB_CNTR_FRES | USB_CNTR_PDWN; - for (uint32_t i = 0; i < 200; i++) { // should be a few us + for (volatile uint32_t i = 0; i < 200; i++) { // should be a few us asm("NOP"); } USB->CNTR &= ~USB_CNTR_PDWN; // Wait startup time, for F042 and F070, this is <= 1 us. - for (uint32_t i = 0; i < 200; i++) { // should be a few us + for (volatile uint32_t i = 0; i < 200; i++) { // should be a few us asm("NOP"); } USB->CNTR = 0; // Enable USB |