giomba
/
nes-proj
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Eliminate UART_CONF_IBRD and UART_CONF_FBRD.

This commit is contained in:
Ian Martin 2014-03-22 10:26:03 -04:00
parent ee45fc7533
commit 336224633a
2 changed files with 0 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
cpu/cc2538/dev/uart.c
View File

@ -168,17 +168,7 @@ uart_init(void)
REG(UART_BASE | UART_CTL) = UART_CTL_VALUE; REG(UART_BASE | UART_CTL) = UART_CTL_VALUE;
/* Baud Rate Generation */ /* Baud Rate Generation */
#if (defined UART_CONF_BAUD_RATE)
uart_set_baudrate(UART_CONF_BAUD_RATE); uart_set_baudrate(UART_CONF_BAUD_RATE);
#elif (defined UART_CONF_IBRD && defined UART_CONF_FBRD)
REG(UART_BASE | UART_IBRD) = UART_CONF_IBRD;
REG(UART_BASE | UART_FBRD) = UART_CONF_FBRD;
#else
#error "UART baud rate misconfigured and custom IBRD/FBRD values not provided"
#error "Check the value of UART_CONF_BAUD_RATE in contiki-conf.h or project-conf.h"
#error "Alternatively, you can provide custom values for "
#error "UART_CONF_IBRD and UART_CONF_FBRD"
#endif
/* UART Control: 8N1 with FIFOs */ /* UART Control: 8N1 with FIFOs */
REG(UART_BASE | UART_LCRH) = UART_LCRH_WLEN_8 | UART_LCRH_FEN; REG(UART_BASE | UART_LCRH) = UART_LCRH_WLEN_8 | UART_LCRH_FEN;

8
platform/cc2538dk/README.md
View File

@ -367,14 +367,6 @@ By default, the CC2538 UART is configured with a baud rate of 115200. It is easy
#define UART_CONF_BAUD_RATE 230400 #define UART_CONF_BAUD_RATE 230400
Currently, this configuration directive only supports values 115200, 230400 and 460800. Custom baud rates can also be achieved by following the steps below:
* Configure `UART_CONF_BAUD_RATE` with an unsupported value to prevent it from auto-choosing values for IBRD and FBRD. For instance, in your project-conf.h you can do:
#define UART_CONF_BAUD_RATE 0
* Provide custom values for `UART_CONF_IBRD` and `UART_CONF_FBRD` according to the guidelines in the CC2538 User Guide.
RF and USB DMA RF and USB DMA
-------------- --------------
Transfers between RAM and the RF and USB will be conducted with DMA. If for whatever reason you wish to disable this, here are the relevant configuration lines. Transfers between RAM and the RF and USB will be conducted with DMA. If for whatever reason you wish to disable this, here are the relevant configuration lines.