Diff: targets/hal/TARGET_NXP/TARGET_LPC176X/serial_api.c

Revision:

113:65a335a675de

Parent:

109:bc5f94f2a67f

Child:

122:6790158fd562

--- a/targets/hal/TARGET_NXP/TARGET_LPC176X/serial_api.c	Fri Mar 07 16:00:07 2014 +0000
+++ b/targets/hal/TARGET_NXP/TARGET_LPC176X/serial_api.c	Mon Mar 10 11:30:07 2014 +0000
@@ -76,7 +76,7 @@
 struct serial_global_data_s {
     uint32_t serial_irq_id;
     gpio_t sw_rts, sw_cts;
-    uint8_t count, rx_irq_set_flow, rx_irq_set_api;
+    uint8_t rx_irq_set_flow, rx_irq_set_api;
 };
 
 static struct serial_global_data_s uart_data[UART_NUM];
@@ -357,7 +357,6 @@
 void serial_putc(serial_t *obj, int c) {
     while (!serial_writable(obj));
     obj->uart->THR = c;
-    uart_data[obj->index].count++;    
 }
 
 int serial_readable(serial_t *obj) {
@@ -365,16 +364,10 @@
 }
 
 int serial_writable(serial_t *obj) {
-    int isWritable = 1;
     if (NC != uart_data[obj->index].sw_cts.pin)
-        isWritable = (gpio_read(&uart_data[obj->index].sw_cts) == 0) && (obj->uart->LSR & 0x40);
-    else {
-        if (obj->uart->LSR & 0x20)
-            uart_data[obj->index].count = 0;
-        else if (uart_data[obj->index].count >= 16)
-            isWritable = 0;
-    }
-    return isWritable;
+        return (gpio_read(&uart_data[obj->index].sw_cts) == 0) && (obj->uart->LSR & 0x40);  //If flow control: writable if CTS low + UART done
+    else
+        return obj->uart->LSR & 0x20;                                                       //No flow control: writable if space in holding register
 }
 
 void serial_clear(serial_t *obj) {
@@ -419,7 +412,7 @@
             pinmap_pinout(txflow, PinMap_UART_CTS);
         } else {
             // Can't enable in hardware, use software emulation
-            gpio_init(&uart_data[index].sw_cts, txflow, PIN_INPUT);
+            gpio_init_in(&uart_data[index].sw_cts, txflow);
         }
     }
     if (((FlowControlRTS == type) || (FlowControlRTSCTS == type)) && (NC != rxflow)) {
@@ -434,8 +427,7 @@
             uart1->MCR |= UART_MCR_RTSEN_MASK;
             pinmap_pinout(rxflow, PinMap_UART_RTS);
         } else { // can't enable in hardware, use software emulation
-            gpio_init(&uart_data[index].sw_rts, rxflow, PIN_OUTPUT);
-            gpio_write(&uart_data[index].sw_rts, 0);
+            gpio_init_out_ex(&uart_data[index].sw_rts, rxflow, 0);
             // Enable RX interrupt
             serial_flow_irq_set(obj, 1);
         }