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add ref. crystal trimming.

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This commit is contained in:
Mariano Alvira 2010-03-01 13:01:51 -05:00
parent 78be082b3c
commit eb94e7daaf
6 changed files with 55 additions and 4 deletions
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15
board/redbee-dev.h
View file

@ -1,10 +1,21 @@
#ifndef BOARD_REDBEE_DEV_H
#define BOARD_REDBEE_DEV_H
#include <std_conf.h>
#define LED_RED (1 << 23)
#define LED_GREEN (1 << 24)
#define LED_BLUE (1 << 25)
/* XTAL TUNE parameters */
/* see http://devl.org/pipermail/mc1322x/2009-December/000162.html */
/* for details about how to make this measurment */
/* Coarse tune: add 4pf */
#define CTUNE_4PF 1
/* Coarse tune: add 0-15 pf */
#define CTUNE 3
/* Fine tune: add FTUNE * 156fF (FTUNE is 4bits) */
#define FTUNE 6
#include <std_conf.h>
#endif

15
board/redbee-r1.h
View file

@ -1,10 +1,21 @@
#ifndef BOARD_REDBEE_R1_H
#define BOARD_REDBEE_R1_H
#include <std_conf.h>
#define LED_RED (1 << 8)
#define LED_GREEN (1 << 9)
#define LED_BLUE (1 << 10)
/* XTAL TUNE parameters */
/* see http://devl.org/pipermail/mc1322x/2009-December/000162.html */
/* for details about how to make this measurment */
/* Coarse tune: add 4pf */
#define CTUNE_4PF 1
/* Coarse tune: add 0-15 pf */
#define CTUNE 3
/* Fine tune: add FTUNE * 156fF (FTUNE is 4bits) */
#define FTUNE 2
#include <std_conf.h>
#endif

20
board/std_conf.h
View file

@ -7,4 +7,24 @@
#define vreg_init() default_vreg_init()
#endif
/* XTAL TUNE parameters */
/* recommended defaults from the datasheet */
/* Coarse tune: add 4pf */
#ifndef CTUNE_4PF
#define CTUNE_4PF 1
#endif
/* Coarse tune: add 0-7 pf */
#ifndef CTUNE
#define CTUNE 5
#endif
/* Fine tune: add FTUNE * 156fF (FTUNE is 4bits) */
#ifndef FTUNE
#define FTUNE 16
#endif
/* datasheet recommends taht you don't change this */
#ifndef IBIAS
#define IBIAS 0x1F
#endif
#endif

3
libmc1322x/include/crm.h
View file

@ -97,4 +97,7 @@
#define SLEEP_RAM_64K sleep_ram_retain(2)
#define SLEEP_RAM_96K sleep_ram_retain(3)
#define pack_XTAL_CNTL(ctune4pf, ctune, ftune, ibias) \
(*CRM_XTAL_CNTL = ((ctune4pf << 25) | (ctune << 21) | ( ftune << 16) | (ibias << 8) | 0x52))
#endif

3
tests/rftest-rx.c
View file

@ -52,6 +52,9 @@ void main(void) {
vreg_init();
init_phy();
/* trim the reference osc. to 24MHz */
pack_XTAL_CNTL(CTUNE_4PF, CTUNE, FTUNE, IBIAS);
set_power(0x0f); /* 0dbm */
set_channel(0); /* channel 11 */

3
tests/rftest-tx.c
View file

@ -70,6 +70,9 @@ void main(void) {
flyback_init();
init_phy();
/* trim the reference osc. to 24MHz */
pack_XTAL_CNTL(CTUNE_4PF, CTUNE, FTUNE, IBIAS);
set_power(0x0f); /* 0dbm */
set_channel(0); /* channel 11 */