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Sleep with __wfi() between USB interrupts instead of busy-polling

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Ian Gulliver
2026-04-05 20:36:34 +09:00
parent 401008b5a7
commit d33b711378
1 changed files with 29 additions and 27 deletions
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56
picomap.cpp
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@@ -57,37 +57,39 @@ int main() {
while (true) { while (true) {
tud_task(); tud_task();
if (!tud_cdc_available()) continue; while (tud_cdc_available()) {
uint8_t byte;
if (tud_cdc_read(&byte, 1) != 1) break;
uint8_t byte; rx_buf.push_back(byte);
if (tud_cdc_read(&byte, 1) != 1) continue;
rx_buf.push_back(byte); auto msg = try_decode(rx_buf);
if (!msg) {
if (rx_buf.full()) rx_buf.clear();
continue;
}
auto msg = try_decode(rx_buf); rx_buf.clear();
if (!msg) {
if (rx_buf.full()) rx_buf.clear(); switch (msg->type_id) {
continue; case RequestPICOBOOT::ext_id:
send_bytes(encode_response(msg->message_id, ResponsePICOBOOT{}));
sleep_ms(100);
reset_usb_boot(0, 1);
break;
case RequestInfo::ext_id: {
ResponseInfo resp;
pico_unique_board_id_t uid;
pico_get_unique_board_id(&uid);
std::copy(uid.id, uid.id + 8, resp.board_id.begin());
auto ninfo = w6300::get_net_info();
resp.mac = ninfo.mac;
send_bytes(encode_response(msg->message_id, resp));
break;
}
}
} }
rx_buf.clear(); __wfi();
switch (msg->type_id) {
case RequestPICOBOOT::ext_id:
send_bytes(encode_response(msg->message_id, ResponsePICOBOOT{}));
sleep_ms(100);
reset_usb_boot(0, 1);
break;
case RequestInfo::ext_id: {
ResponseInfo resp;
pico_unique_board_id_t uid;
pico_get_unique_board_id(&uid);
std::copy(uid.id, uid.id + 8, resp.board_id.begin());
auto ninfo = w6300::get_net_info();
resp.mac = ninfo.mac;
send_bytes(encode_response(msg->message_id, resp));
break;
}
}
} }
} }