Updated comments

diff --git a/drivers/serial.c b/drivers/serial.c
index 8675e0d..5730b9d 100644 (file)
--- a/drivers/serial.c
+++ b/drivers/serial.c
@@ -47,6 +47,7 @@ struct uart_device
        /* Output buffer */
        volatile char out_buff[SERIAL_OUT_BUFF_SIZE];
        volatile uint32_t sending; /* Actual sending position in out buffer */
+       /* This lock only prevents multiple calls to serial_write() to execute simultaneously */
        volatile uint32_t out_lock;
        volatile uint32_t out_length; /* actual position to add in out buffer */
 
@@ -179,6 +180,11 @@ int serial_write(uint32_t uart_num, const char *buf, uint32_t length)
        return length;
 }
 
+
+
+/***************************************************************************** */
+/*   UART Setup : private part : Clocks, Pins, Power and Mode   */
+
 struct uart_clk_cfg {
        uint32_t baudrate;
        uint8_t divisor_latch_lsb;
@@ -190,9 +196,6 @@ static struct uart_clk_cfg uart_clk_table[] = {
        { 0, 0, 0, 0, },
 };
 
-/***************************************************************************** */
-/*   UART Setup : private part : Clocks, Pins, Power and Mode   */
-
 /* UART Clock Setup */
 /* Note : for both uarts we use full peripheral clock.
  *    With a minimum main clock of 12MHz, ths gives 12MHz/16 = 750kbauds at least