bstanwell/wch-uf2-example
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we inherently cannot implement this auto reboot properly

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R
2024-04-14 14:36:11 +01:00
parent 0a7f3f9d41
commit 5b69ac973f
2 changed files with 7 additions and 33 deletions
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bootloader.c
+1 -23
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@@ -161,14 +161,9 @@ extern volatile uint32_t USB_EP1_IN[32];
extern uint32_t CSWTAG_LO;
extern uint32_t CSWTAG_HI;
extern uint32_t BLOCKNUM_LO;
extern uint32_t BLOCKNUM_HI;
extern uint32_t TOTBLOCKS_LO;
extern uint32_t TOTBLOCKS_HI;
extern uint32_t ADDRESS_LO;
extern uint32_t ADDRESS_HI;
extern uint32_t ACTIVE_CONFIG;
extern uint32_t UF2_BLOCKS_LEFT;
extern uint32_t CTRL_XFER_STATE;
extern uint32_t CTRL_XFER_STATE_X;
extern uint32_t CTRL_XFER_DESC_SZ;
@@ -376,8 +371,6 @@ __attribute__((naked)) int main(void) {
// [15:0] = blocks left
uint32_t scsi_xfer_lba_blocks = 0;
UF2_BLOCKS_LEFT = 0;
while (1) {
uint32_t usb_int_status = R16_USBD_ISTR;
if (usb_int_status & (1 << 10)) {
@@ -600,7 +593,6 @@ __attribute__((naked)) int main(void) {
CSWTAG_HI = USB_EP1_OUT[3];
uint32_t dCSWTag = CSWTAG_LO | (CSWTAG_HI << 16);
uint32_t dCBWDataTransferLength = USB_EP1_OUT[4] | (USB_EP1_OUT[5] << 16);
uint32_t bmCBWFlags = USB_EP1_OUT[6] & 0xff;
uint32_t operation_code = USB_EP1_OUT[7] >> 8;
switch (operation_code) {
@@ -736,10 +728,6 @@ __attribute__((naked)) int main(void) {
if (!(flags & 1) && bytes == 256 && (address & 0xff) == 0) {
if (flags & (0x2000) && familyid == FAMILY_ID) {
// uf2 good so far!
BLOCKNUM_LO = USB_EP1_OUT[10];
BLOCKNUM_HI = USB_EP1_OUT[11];
TOTBLOCKS_LO = USB_EP1_OUT[12];
TOTBLOCKS_HI = USB_EP1_OUT[13];
ADDRESS_LO = USB_EP1_OUT[6];
ADDRESS_HI = USB_EP1_OUT[7];
@@ -766,15 +754,8 @@ __attribute__((naked)) int main(void) {
if (msc_state & 0x1000) {
if (USB_EP1_OUT[30] == 0x6F30 && USB_EP1_OUT[31] == 0x0AB1) {
// uf2 all magics are good!
uint32_t blocknum = BLOCKNUM_LO | (BLOCKNUM_HI << 16);
uint32_t totblocks = TOTBLOCKS_LO | (TOTBLOCKS_HI << 16);
uint32_t address = ADDRESS_LO | (ADDRESS_HI << 16);
if (UF2_BLOCKS_LEFT == 0)
UF2_BLOCKS_LEFT = (totblocks - 1) | 0x8000;
else
UF2_BLOCKS_LEFT--;
// todo flash the file
// todo ram download mode
R32_FLASH_KEYR = 0x45670123;
@@ -803,10 +784,7 @@ __attribute__((naked)) int main(void) {
if (blocks_left == 0) {
uint32_t dCSWTag = CSWTAG_LO | (CSWTAG_HI << 16);
make_msc_csw(dCSWTag, 0);
if (UF2_BLOCKS_LEFT == 0x8000)
msc_state = STATE_SENT_CSW_REBOOT;
else
msc_state = STATE_SENT_CSW;
msc_state = STATE_SENT_CSW;
} else {
scsi_xfer_lba_blocks = blocks_left;
set_ep_mode(1, 1, USB_EPTYPE_BULK, USB_STAT_ACK, USB_STAT_STALL, 0, 0);