1 files changed, 26 insertions, 12 deletions

diff --git a/ports/esp32/machine_uart.c b/ports/esp32/machine_uart.c
index c334e694b..7fce83f2c 100644
--- a/ports/esp32/machine_uart.c
+++ b/ports/esp32/machine_uart.c
@@ -36,6 +36,20 @@
 #include "py/mperrno.h"
 #include "modmachine.h"
 
+#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(4, 1, 0)
+#define UART_INV_TX UART_INVERSE_TXD
+#define UART_INV_RX UART_INVERSE_RXD
+#define UART_INV_RTS UART_INVERSE_RTS
+#define UART_INV_CTS UART_INVERSE_CTS
+#else
+#define UART_INV_TX UART_SIGNAL_TXD_INV
+#define UART_INV_RX UART_SIGNAL_RXD_INV
+#define UART_INV_RTS UART_SIGNAL_RTS_INV
+#define UART_INV_CTS UART_SIGNAL_CTS_INV
+#endif
+
+#define UART_INV_MASK (UART_INV_TX | UART_INV_RX | UART_INV_RTS | UART_INV_CTS)
+
 typedef struct _machine_uart_obj_t {
     mp_obj_base_t base;
     uart_port_t uart_num;
@@ -68,28 +82,28 @@ STATIC void machine_uart_print(const mp_print_t *print, mp_obj_t self_in, mp_pri
     if (self->invert) {
         mp_printf(print, ", invert=");
         uint32_t invert_mask = self->invert;
-        if (invert_mask & UART_INVERSE_TXD) {
+        if (invert_mask & UART_INV_TX) {
             mp_printf(print, "INV_TX");
-            invert_mask &= ~UART_INVERSE_TXD;
+            invert_mask &= ~UART_INV_TX;
             if (invert_mask) {
                 mp_printf(print, "|");
             }
         }
-        if (invert_mask & UART_INVERSE_RXD) {
+        if (invert_mask & UART_INV_RX) {
             mp_printf(print, "INV_RX");
-            invert_mask &= ~UART_INVERSE_RXD;
+            invert_mask &= ~UART_INV_RX;
             if (invert_mask) {
                 mp_printf(print, "|");
             }
         }
-        if (invert_mask & UART_INVERSE_RTS) {
+        if (invert_mask & UART_INV_RTS) {
             mp_printf(print, "INV_RTS");
-            invert_mask &= ~UART_INVERSE_RTS;
+            invert_mask &= ~UART_INV_RTS;
             if (invert_mask) {
                 mp_printf(print, "|");
             }
         }
-        if (invert_mask & UART_INVERSE_CTS) {
+        if (invert_mask & UART_INV_CTS) {
             mp_printf(print, "INV_CTS");
         }
     }
@@ -238,7 +252,7 @@ STATIC void machine_uart_init_helper(machine_uart_obj_t *self, size_t n_args, co
     }
 
     // set line inversion
-    if (args[ARG_invert].u_int & ~UART_LINE_INV_MASK) {
+    if (args[ARG_invert].u_int & ~UART_INV_MASK) {
         mp_raise_ValueError(MP_ERROR_TEXT("invalid inversion mask"));
     }
     self->invert = args[ARG_invert].u_int;
@@ -380,10 +394,10 @@ STATIC const mp_rom_map_elem_t machine_uart_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_stream_write_obj) },
     { MP_ROM_QSTR(MP_QSTR_sendbreak), MP_ROM_PTR(&machine_uart_sendbreak_obj) },
 
-    { MP_ROM_QSTR(MP_QSTR_INV_TX), MP_ROM_INT(UART_INVERSE_TXD) },
-    { MP_ROM_QSTR(MP_QSTR_INV_RX), MP_ROM_INT(UART_INVERSE_RXD) },
-    { MP_ROM_QSTR(MP_QSTR_INV_RTS), MP_ROM_INT(UART_INVERSE_RTS) },
-    { MP_ROM_QSTR(MP_QSTR_INV_CTS), MP_ROM_INT(UART_INVERSE_CTS) },
+    { MP_ROM_QSTR(MP_QSTR_INV_TX), MP_ROM_INT(UART_INV_TX) },
+    { MP_ROM_QSTR(MP_QSTR_INV_RX), MP_ROM_INT(UART_INV_RX) },
+    { MP_ROM_QSTR(MP_QSTR_INV_RTS), MP_ROM_INT(UART_INV_RTS) },
+    { MP_ROM_QSTR(MP_QSTR_INV_CTS), MP_ROM_INT(UART_INV_CTS) },
 };
 
 STATIC MP_DEFINE_CONST_DICT(machine_uart_locals_dict, machine_uart_locals_dict_table);