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Merge branch 'master' of https://github.com/mbedmicro/mbed

pull/213/head^2
Mihail Stoyanov 2014-03-18 10:56:37 +00:00
parent 01432a058b df09909ec4
commit b95ba7a52a
1 changed files with 12 additions and 5 deletions
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17
libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC176X/serial_api.c
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@ -76,7 +76,7 @@ serial_t stdio_uart;
struct serial_global_data_s {
uint32_t serial_irq_id;
gpio_t sw_rts, sw_cts;
uint8_t rx_irq_set_flow, rx_irq_set_api;
uint8_t count, rx_irq_set_flow, rx_irq_set_api;
};
static struct serial_global_data_s uart_data[UART_NUM];
@ -100,7 +100,7 @@ void serial_init(serial_t *obj, PinName tx, PinName rx) {
case UART_2: LPC_SC->PCONP |= 1 << 24; break;
case UART_3: LPC_SC->PCONP |= 1 << 25; break;
}
// enable fifos and default rx trigger level
obj->uart->FCR = 1 << 0 // FIFO Enable - 0 = Disables, 1 = Enabled
| 0 << 1 // Rx Fifo Reset
@ -357,6 +357,7 @@ int serial_getc(serial_t *obj) {
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) {
@ -364,10 +365,16 @@ int serial_readable(serial_t *obj) {
}
int serial_writable(serial_t *obj) {
int isWritable = 1;
if (NC != uart_data[obj->index].sw_cts.pin)
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
isWritable = (gpio_read(&uart_data[obj->index].sw_cts) == 0) && (obj->uart->LSR & 0x40); //If flow control: writable if CTS low + UART done
else {
if (obj->uart->LSR & 0x20)
uart_data[obj->index].count = 0;
else if (uart_data[obj->index].count >= 16)
isWritable = 0;
}
return isWritable;
}
void serial_clear(serial_t *obj) {