bstanwell/wch-uf2-example
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xxx this mostly works

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R
2024-04-14 07:10:28 +01:00
parent 79237091f5
commit 543baf7090
1 changed files with 28 additions and 27 deletions
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bootloader.c
+28 -27
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@@ -157,7 +157,8 @@ extern volatile USBD_descriptor USB_DESCS[2];
extern volatile uint32_t USB_EP0_OUT[4];
extern volatile uint32_t USB_EP0_IN[4];
extern volatile uint32_t USB_EP1_OUT[32];
#define USB_EP1_IN(offs) (*(volatile uint32_t *)(0x400060C0 + 2 * (offs)))
extern volatile uint32_t USB_EP1_IN[32];
#define USB_EP1_IN_OLDOLD(offs) (*(volatile uint32_t *)(0x400060C0 + 2 * (offs)))
#define USB_UF2_FIELDS_STASH(offs) (*(uint32_t *)(0x400061d4 + 2 * (offs)))
#define ACTIVE_CONFIG USB_UF2_FIELDS_STASH(12)
@@ -261,7 +262,7 @@ const uint8_t READ_CAPACITY[8] __attribute__((aligned(2))) = {
};
static void ep1_send_hardcoded_response(const uint16_t *data, uint32_t len) {
for (uint32_t i = 0; i < (len + 1) / 2; i++)
USB_EP1_IN(i * 2) = data[i];
USB_EP1_IN[i] = data[i];
USB_DESCS[1].count_tx = len;
set_ep_mode(1, 1, USB_EPTYPE_BULK, USB_STAT_STALL, USB_STAT_ACK, 0, 0);
}
@@ -288,22 +289,22 @@ static void synthesize_block(uint32_t block, uint32_t piece) {
int usbofs, secofs;
for (usbofs = 0, secofs = cur_offset_16bits; secofs < sector_sz_16bits; usbofs++, secofs++)
USB_EP1_IN(usbofs * 2) = sector_ptr[secofs];
USB_EP1_IN_OLDOLD(usbofs * 2) = sector_ptr[secofs];
for (; usbofs < 32; usbofs++)
USB_EP1_IN(usbofs * 2) = 0;
USB_EP1_IN_OLDOLD(usbofs * 2) = 0;
if (block == 0 && piece == 7)
USB_EP1_IN(62) = 0xaa55;
USB_EP1_IN[31] = 0xaa55;
} else if (block == 1 && piece == 0) {
USB_EP1_IN(0) = 0xfff8;
USB_EP1_IN(2) = 0xffff;
USB_EP1_IN(4) = 0xfff8;
USB_EP1_IN(6) = 0xfff8;
USB_EP1_IN[0] = 0xfff8;
USB_EP1_IN[1] = 0xffff;
USB_EP1_IN[2] = 0xfff8;
USB_EP1_IN[3] = 0xfff8;
for (int i = 4; i < 32; i++)
USB_EP1_IN(i * 2) = 0;
USB_EP1_IN[i] = 0;
} else {
for (int i = 0; i < 32; i++)
USB_EP1_IN(i * 2) = 0;
USB_EP1_IN[i] = 0;
}
USB_DESCS[1].count_tx = 64;
@@ -311,13 +312,13 @@ static void synthesize_block(uint32_t block, uint32_t piece) {
}
static void make_msc_csw(uint32_t dCSWTag, uint32_t error) {
USB_EP1_IN(0) = 0x5355;
USB_EP1_IN(2) = 0x5342;
USB_EP1_IN(4) = dCSWTag;
USB_EP1_IN(6) = dCSWTag >> 16;
USB_EP1_IN(8) = 0; // xxx this isn't very right
USB_EP1_IN(10) = 0;
USB_EP1_IN(12) = error;
USB_EP1_IN[0] = 0x5355;
USB_EP1_IN[1] = 0x5342;
USB_EP1_IN[2] = dCSWTag;
USB_EP1_IN[3] = dCSWTag >> 16;
USB_EP1_IN[4] = 0; // xxx this isn't very right
USB_EP1_IN[5] = 0;
USB_EP1_IN[6] = error;
USB_DESCS[1].count_tx = 13;
set_ep_mode(1, 1, USB_EPTYPE_BULK, USB_STAT_STALL, USB_STAT_ACK, 0, 0);
}
@@ -601,15 +602,15 @@ __attribute__((naked)) int main(void) {
break;
case 0x03:
// request sense
USB_EP1_IN(0) = 0x0070;
USB_EP1_IN(2) = (msc_state >> 20) & 0xf;
USB_EP1_IN(4) = 0;
USB_EP1_IN(6) = 0;
USB_EP1_IN(8) = 0;
USB_EP1_IN(10) = 0;
USB_EP1_IN(12) = (msc_state >> 24) & 0xff;
USB_EP1_IN(14) = 0;
USB_EP1_IN(16) = 0;
USB_EP1_IN[0] = 0x0070;
USB_EP1_IN[1] = (msc_state >> 20) & 0xf;
USB_EP1_IN[2] = 0;
USB_EP1_IN[3] = 0;
USB_EP1_IN[4] = 0;
USB_EP1_IN[5] = 0;
USB_EP1_IN[6] = (msc_state >> 24) & 0xff;
USB_EP1_IN[7] = 0;
USB_EP1_IN[8] = 0;
USB_DESCS[1].count_tx = 18;
set_ep_mode(1, 1, USB_EPTYPE_BULK, USB_STAT_STALL, USB_STAT_ACK, 0, 0);
msc_state = STATE_SENT_DATA_IN;