int up_putc(int ch)
{
uint8_t state;
/* Keep interrupts disabled so that we do not interfere with normal
* driver operation.
*
* REVISIT: I can imagine scenarios where the follow logic gets pre-empted
* and the the UART interrupts get left in a bad state.
*/
state = z16f_disableuartirq(&CONSOLE_DEV);
/* Check for LF */
if (ch == '\n')
{
/* Add CR before LF */
z16f_consoleput('\r');
}
/* Output the character */
z16f_consoleput((uint8_t)ch);
/* It is important to restore the TX interrupt while the send is pending.
* otherwise, TRDE interrupts can be lost since they do not pend after the
* TRDE false->true transition.
*/
z16f_restoreuartirq(&CONSOLE_DEV, state);
return ch;
}
int up_putc(int ch)
{
uint8_t state;
/* Keep interrupts disabled so that we do not interfere with normal
* driver operation
*/
state = z16f_disableuartirq(&CONSOLE_DEV);
/* Check for LF */
if (ch == '\n')
{
/* Add CR before LF */
z16f_consoleput('\r');
}
/* Output the character */
z16f_consoleput((uint8_t)ch);
/* It is important to restore the TX interrupt while the send is pending.
* otherwise, TRDE interrupts can be lost since they do not pend after the
* TRDE false->true transition.
*/
z16f_restoreuartirq(&CONSOLE_DEV, state);
return ch;
}
