bstanwell/wch-uf2-example
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fix bug overflowing buffer when synthesizing data

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R
2024-04-14 14:02:31 +01:00
parent 63e32289d9
commit 0a7f3f9d41
1 changed files with 2 additions and 3 deletions
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bootloader.c
+2 -3
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@@ -158,7 +158,6 @@ extern volatile uint32_t USB_EP0_OUT[4];
extern volatile uint32_t USB_EP0_IN[4];
extern volatile uint32_t USB_EP1_OUT[32];
extern volatile uint32_t USB_EP1_IN[32];
#define USB_EP1_IN_OLDOLD(offs) (*(volatile uint32_t *)(0x400060C0 + 2 * (offs)))
extern uint32_t CSWTAG_LO;
extern uint32_t CSWTAG_HI;
@@ -296,8 +295,8 @@ static void synthesize_block(uint32_t block, uint32_t piece) {
uint32_t cur_offset_16bits = piece * 32;
int usbofs, secofs;
for (usbofs = 0, secofs = cur_offset_16bits; secofs < sector_sz_16bits; usbofs++, secofs++)
USB_EP1_IN_OLDOLD(usbofs * 2) = sector_ptr[secofs];
for (usbofs = 0, secofs = cur_offset_16bits; usbofs < 32 && secofs < sector_sz_16bits; usbofs++, secofs++)
USB_EP1_IN[usbofs] = sector_ptr[secofs];
for (; usbofs < 32; usbofs++)
USB_EP1_IN[usbofs] = 0;