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libmain: add sdk_system_uart_swap and sdk_system_uart_de_swap (#171)

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Our Air Quality 2016-08-28 06:18:13 +10:00 • committed by Johan Kanflo
parent fb33995bc4
commit 03248a96c7
1 changed files with 34 additions and 0 deletions
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34
open_esplibs/libmain/user_interface.c
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@ -558,4 +558,38 @@ enum sdk_dhcp_status sdk_wifi_station_dhcpc_status(void) {
return sdk_dhcpc_flag;
}
void sdk_system_uart_swap()
{
while (FIELD2VAL(UART_STATUS_TXFIFO_COUNT, UART(0).STATUS)) {};
while (FIELD2VAL(UART_STATUS_TXFIFO_COUNT, UART(1).STATUS)) {};
/* Disable pullup IO_MUX_MTDO, Alt TX. GPIO15. */
iomux_set_pullup_flags(3, 0);
/* IO_MUX_MTDO to function UART0_RTS. */
iomux_set_function(3, IOMUX_GPIO15_FUNC_UART0_RTS);
/* Enable pullup MUX_MTCK. Alt RX. GPIO13. */
iomux_set_pullup_flags(1, IOMUX_PIN_PULLUP);
/* IO_MUX_MTCK to function UART0_CTS. */
iomux_set_function(1, IOMUX_GPIO13_FUNC_UART0_CTS);
DPORT.PERI_IO |= DPORT_PERI_IO_SWAP_UART0_PINS;
}
void sdk_system_uart_de_swap()
{
while (FIELD2VAL(UART_STATUS_TXFIFO_COUNT, UART(0).STATUS)) {};
while (FIELD2VAL(UART_STATUS_TXFIFO_COUNT, UART(1).STATUS)) {};
/* Disable pullup IO_MUX_U0TXD, TX. GPIO 1. */
iomux_set_pullup_flags(5, 0);
/* IO_MUX_U0TXD to function UART0_TXD. */
iomux_set_function(5, IOMUX_GPIO1_FUNC_UART0_TXD);
/* Enable pullup IO_MUX_U0RXD. RX. GPIO 3. */
iomux_set_pullup_flags(4, IOMUX_PIN_PULLUP);
/* IO_MUX_U0RXD to function UART0_RXD. */
iomux_set_function(4, IOMUX_GPIO3_FUNC_UART0_RXD);
DPORT.PERI_IO &= ~DPORT_PERI_IO_SWAP_UART0_PINS;
}
#endif /* OPEN_LIBMAIN_USER_INTERFACE */