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Fix writing large usb buffers.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-09-25 23:23:07 +02:00
parent 52a2ff8b34
commit fa371643a1
1 changed files with 11 additions and 9 deletions
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20
src/usb/usb.c
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@@ -46,14 +46,15 @@ void usb_set_timeout_counter(uint32_t v) {
uint32_t usb_write_offset(uint16_t len, uint16_t offset) { uint32_t usb_write_offset(uint16_t len, uint16_t offset) {
uint8_t pkt_max = 64; uint8_t pkt_max = 64;
int w = 0;
if (len > sizeof(tx_buffer)) if (len > sizeof(tx_buffer))
len = sizeof(tx_buffer); len = sizeof(tx_buffer);
w_len = len; w_len = len;
tx_r_offset = offset; tx_r_offset = offset;
driver_write(tx_buffer+offset, MIN(len, pkt_max)); w = driver_write(tx_buffer+offset, MIN(len, pkt_max));
w_len -= MIN(len, pkt_max); w_len -= w;
tx_r_offset += MIN(len, pkt_max); tx_r_offset += w;
return MIN(w_len, pkt_max); return w;
} }
size_t usb_rx(const uint8_t *buffer, size_t len) { size_t usb_rx(const uint8_t *buffer, size_t len) {
@@ -69,12 +70,13 @@ size_t usb_rx(const uint8_t *buffer, size_t len) {
} }
uint32_t usb_write_flush() { uint32_t usb_write_flush() {
if (w_len > 0) { int w = 0;
driver_write(tx_buffer+tx_r_offset, MIN(w_len, 64)); if (w_len > 0 && tud_vendor_write_available() > 0) {
tx_r_offset += MIN(w_len, 64); w = driver_write(tx_buffer+tx_r_offset, MIN(w_len, 64));
w_len -= MIN(w_len, 64); tx_r_offset += w;
w_len -= w;
} }
return w_len; return w;
} }
uint32_t usb_write(uint16_t len) { uint32_t usb_write(uint16_t len) {