kopia lustrzana https://github.com/micropython/micropython
rp2/mphalport: Add a timeout to mp_hal_stdout_tx_strn().
If USB CDC is connected and the board sends data, but the host does not receive the data, the device locks up. This is fixed in this commit by having a timeout of 500ms, after which time the transmission is skipped. Fixes issue #9634.pull/9816/head
rodzic
d0687e90ab
commit
8447fef9f9
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@ -139,9 +139,14 @@ void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
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if (n > CFG_TUD_CDC_EP_BUFSIZE) {
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n = CFG_TUD_CDC_EP_BUFSIZE;
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}
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while (n > tud_cdc_write_available()) {
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int timeout = 0;
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// Wait with a max of USC_CDC_TIMEOUT ms
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while (n > tud_cdc_write_available() && timeout++ < MICROPY_HW_USB_CDC_TX_TIMEOUT) {
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MICROPY_EVENT_POLL_HOOK
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}
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if (timeout >= MICROPY_HW_USB_CDC_TX_TIMEOUT) {
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break;
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}
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uint32_t n2 = tud_cdc_write(str + i, n);
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tud_cdc_write_flush();
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i += n2;
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@ -33,6 +33,7 @@
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#include "RP2040.h" // cmsis, for __WFI
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#define SYSTICK_MAX (0xffffff)
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#define MICROPY_HW_USB_CDC_TX_TIMEOUT (500)
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extern int mp_interrupt_char;
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extern ringbuf_t stdin_ringbuf;
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