drivers/console/serial.c File Reference
Serial console driver. More...
#include <assert.h>
#include <interrupt.h>
#include <status-codes.h>
#include <util.h>
#include <chip/clk.h>
#include <console/core.h>
#include <console/driver.h>
#include <console/serial.h>
#include <hardware/usart.h>
Include dependency graph for serial.c:
Go to the source code of this file.
Functions | |
| static uint32_t | usart_calc_brgr (unsigned long base_hz, unsigned long baud) |
Detailed Description
Serial console driver.This is a very simple serial driver serving as a backend for the console layer. Everything that the console layer writes is dumped over the serial line.
- Compiler: IAR EWAVR32 and GNU GCC for AVR32
- Supported devices: All devices
- AppNote:
Definition in file serial.c.
Function Documentation
| static uint32_t usart_calc_brgr | ( | unsigned long | base_hz, | |
| unsigned long | baud | |||
| ) | [static] |
Calculate the value to be written to the BRGR register given a baud rate and assuming 8x oversampling. To calculate the baud rate with 16x oversampling, use base_hz = peripheral_clock / 2.
- Parameters:
-
base_hz The input clock rate after accounting for oversampling baud Desired baud rate.
- Returns:
- BRGR value that will generate approximately the baud rate specified by baud, or 0 if this is not possible with the specified input clock rate.
