From a021a9e5f07769ba214b1f5d7223e3010dd8deee Mon Sep 17 00:00:00 2001
From: hathach <thach@tinyusb.org>
Date: Fri, 29 Dec 2017 21:25:43 +0700
Subject: [PATCH] update uart to remove dependency on machine uart module

---
 ports/nrf/hal/hal_uart.c      | 10 ----------
 ports/nrf/mphalport.c         | 31 ++++++++++++++++---------------
 ports/nrf/supervisor/serial.c | 30 ++++++++++++++++++++++++------
 3 files changed, 40 insertions(+), 31 deletions(-)

diff --git a/ports/nrf/hal/hal_uart.c b/ports/nrf/hal/hal_uart.c
index 642ab0d920..1209dc3709 100644
--- a/ports/nrf/hal/hal_uart.c
+++ b/ports/nrf/hal/hal_uart.c
@@ -69,16 +69,6 @@ hal_uart_error_t hal_uart_char_write(NRF_UART_Type * p_instance, uint8_t ch) {
 }
 
 hal_uart_error_t hal_uart_char_read(NRF_UART_Type * p_instance, uint8_t * ch) {
-//    p_instance->ERRORSRC = 0;
-//    while (p_instance->EVENTS_RXDRDY != 1) {
-//        // Wait for RXD data.
-//    }
-//
-//    p_instance->EVENTS_RXDRDY = 0;
-//    *ch = p_instance->RXD;
-//
-//    return p_instance->ERRORSRC;
-
   while ( !fifo_read(_ff_uart, ch) ) {
     // wait for fifo data
   }
diff --git a/ports/nrf/mphalport.c b/ports/nrf/mphalport.c
index f6e7748279..957d3535d2 100644
--- a/ports/nrf/mphalport.c
+++ b/ports/nrf/mphalport.c
@@ -30,8 +30,9 @@
 #include "py/mpstate.h"
 #include "py/mphal.h"
 #include "py/mperrno.h"
-#include "uart.h"
+#include "hal_uart.h"
 
+#define UART_INSTANCE   UART_BASE(0)
 FIL* boot_output_file;
 
 // this table converts from HAL_StatusTypeDef to POSIX errno
@@ -46,36 +47,36 @@ NORETURN void mp_hal_raise(HAL_StatusTypeDef status) {
     nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(mp_hal_status_to_errno_table[status])));
 }
 
-void mp_hal_set_interrupt_char(int c) {
-
-}
-
 #if (MICROPY_PY_BLE_NUS == 0)
 int mp_hal_stdin_rx_chr(void) {
     for (;;) {
-        if (MP_STATE_PORT(pyb_stdio_uart) != NULL && uart_rx_any(MP_STATE_PORT(pyb_stdio_uart))) {
-            return uart_rx_char(MP_STATE_PORT(pyb_stdio_uart));
+        if ( hal_uart_available(UART_INSTANCE) ) {
+          uint8_t ch;
+          hal_uart_char_read(UART_INSTANCE, &ch);
+          return (int) ch;
         }
     }
 
     return 0;
 }
 
-bool mp_hal_stdin_any(void)
-{
-  return uart_rx_any(MP_STATE_PORT(pyb_stdio_uart));
+bool mp_hal_stdin_any(void) {
+  return hal_uart_available(UART_INSTANCE);
 }
 
 void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
-    if (MP_STATE_PORT(pyb_stdio_uart) != NULL) {
-        uart_tx_strn(MP_STATE_PORT(pyb_stdio_uart), str, len);
-    }
+  while(len--) {
+    hal_uart_char_write(UART_INSTANCE, *str++);
+  }
 }
 
 void mp_hal_stdout_tx_strn_cooked(const char *str, mp_uint_t len) {
-    if (MP_STATE_PORT(pyb_stdio_uart) != NULL) {
-        uart_tx_strn_cooked(MP_STATE_PORT(pyb_stdio_uart), str, len);
+  while(len--){
+    if (*str == '\n') {
+      hal_uart_char_write(UART_INSTANCE, '\r');
     }
+    hal_uart_char_write(UART_INSTANCE, *str++);
+  }
 }
 #endif
 
diff --git a/ports/nrf/supervisor/serial.c b/ports/nrf/supervisor/serial.c
index 0b844fa018..465c8394c5 100644
--- a/ports/nrf/supervisor/serial.c
+++ b/ports/nrf/supervisor/serial.c
@@ -29,18 +29,36 @@
 #include "py/obj.h"
 #include "py/runtime.h"
 #include "mphalport.h"
-#include "uart.h"
+#include "pins.h"
+#include "hal_uart.h"
 
 void serial_init(void) {
-  uart_init0();
+//  uart_init0();
+//
+//  mp_obj_t args[2] = {
+//      MP_OBJ_NEW_SMALL_INT(0),
+//      MP_OBJ_NEW_SMALL_INT(115200),
+//  };
+//  MP_STATE_PORT(pyb_stdio_uart) = machine_hard_uart_type.make_new((mp_obj_t)&machine_hard_uart_type, MP_ARRAY_SIZE(args), 0, args);
 
-  mp_obj_t args[2] = {
-      MP_OBJ_NEW_SMALL_INT(0),
-      MP_OBJ_NEW_SMALL_INT(115200),
+  hal_uart_init_t param =
+  {
+      .id           = 0,
+      .rx_pin       = &MICROPY_HW_UART1_RX,
+      .tx_pin       = &MICROPY_HW_UART1_TX,
+      .rts_pin      = NULL,
+      .cts_pin      = NULL,
+      .flow_control = MICROPY_HW_UART1_HWFC ? true : false,
+      .use_parity   = false,
+      .baud_rate    = HAL_UART_BAUD_115K2,
+      .irq_priority = 6,
+      .irq_num      = UARTE0_UART0_IRQn
   };
-  MP_STATE_PORT(pyb_stdio_uart) = machine_hard_uart_type.make_new((mp_obj_t)&machine_hard_uart_type, MP_ARRAY_SIZE(args), 0, args);
+
+  hal_uart_init( UART_BASE(0), &param);
 }
 
+
 bool serial_connected(void) {
     return true;
 }