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arch/risc-v/espressif: Remove usb serial workaround for esp32 modules

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This commit includes a change to the esp_txint function in the arch/risc-v/src/common/espressif/esp_usbserial.c file. The change primarily involves removing an optimization workaround and adding a call to flush the transmit FIFO.

After this change the usbserial config is able to work using all optimization levels.

Changes in esp_txint function:

Removed the __attribute__((optimize("O0"))) workaround.
Added a call to usb_serial_jtag_ll_txfifo_flush() at the beginning of the function.

Signed-off-by: Felipe Moura <moura.fmo@gmail.com>
This commit is contained in:
Felipe Moura 2025-03-01 16:32:19 -03:00 • committed by Alin Jerpelea
parent 7bad94a964
commit 94f210ded6
1 changed files with 2 additions and 6 deletions
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8
arch/risc-v/src/common/espressif/esp_usbserial.c
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@ -216,14 +216,10 @@ static void esp_shutdown(struct uart_dev_s *dev)
*
****************************************************************************/
/* Workaround: This function does not work when optimization is different
* from O0. This modification will be removed once a final solution is
* implemented.
*/
__attribute__((optimize("O0")))
static void esp_txint(struct uart_dev_s *dev, bool enable)
{
usb_serial_jtag_ll_txfifo_flush();
if (enable)
{
usb_serial_jtag_ll_ena_intr_mask(