void up_earlyserialinit(void)
{
(void)z16f_disableuartirq(&TTYS0_DEV);
(void)z16f_disableuartirq(&TTYS1_DEV);
CONSOLE_DEV.isconsole = true;
z16f_setup(&CONSOLE_DEV);
}
void up_earlyserialinit(void)
{
uint8_t regval;
/* Configure UART alternate pin functions. This may duplicate logic in
* z16f_lowuartinit() or z16f_lowinit().
*/
#ifdef CONFIG_Z16F_UART0
/* UART0 is PA4 and PA5, alternate function 1 */
regval = getreg8(Z16F_GPIOA_AFL);
regval |= 0x30;
putreg8(regval, Z16F_GPIOA_AFL);
regval = getreg8(Z16F_GPIOA_AFH);
regval &= ~0x30;
putreg8(regval, Z16F_GPIOA_AFH);
#endif
#ifdef CONFIG_Z16F_UART1
/* UART1 is PD4 and PD5, alternate function 1 */
regval = getreg8(Z16F_GPIOD_AFL);
regval |= 0x30;
putreg8(regval, Z16F_GPIOD_AFL);
regval = getreg8(Z16F_GPIOD_AFH);
regval &= ~0x30;
putreg8(regval, Z16F_GPIOD_AFH);
#endif
/* Disable UART interrupts */
#ifdef TTYS0_DEV
(void)z16f_disableuartirq(&TTYS0_DEV);
#endif
#ifdef TTYS1_DEV
(void)z16f_disableuartirq(&TTYS1_DEV);
#endif
/* Configuration any serial console */
#ifdef CONSOLE_DEV
CONSOLE_DEV.isconsole = true;
z16f_setup(&CONSOLE_DEV);
#endif
}
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;
}
static void z16f_shutdown(struct uart_dev_s *dev)
{
(void)z16f_disableuartirq(dev);
}
static void z16f_shutdown(struct uart_dev_s *dev)
{
struct z16f_uart_s *priv = (struct z16f_uart_s*)dev->priv;
(void)z16f_disableuartirq(dev);
}