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generate ctov properly.

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Thanks Umberto!

Signed-off-by: Mariano Alvira <mar@devl.org>
This commit is contained in:
Mariano Alvira 2009-05-29 14:50:38 -04:00
parent bf9e762a81
commit c419d7403b
1 changed files with 51 additions and 20 deletions
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71
src/maca.c
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@ -160,6 +160,43 @@ void radio_on(void) {
init_phy();
}
/* initialized with 0x4c */
uint8_t ctov[16] = {
0x0b,
0x0b,
0x0b,
0x0a,
0x0d,
0x0d,
0x0c,
0x0c,
0x0f,
0x0e,
0x0e,
0x0e,
0x11,
0x10,
0x10,
0x0f,
};
/* get_ctov thanks to Umberto */
#define _INIT_CTOV_WORD_1 0x00dfbe77
#define _INIT_CTOV_WORD_2 0x023126e9
uint8_t get_ctov( uint32_t r0, uint32_t r1 )
{
r0 = r0 * _INIT_CTOV_WORD_1;
r0 += ( r1 << 22 );
r0 += _INIT_CTOV_WORD_2;
r0 = (uint32_t)(((int32_t)r0) >> 25);
return (uint8_t)r0;
}
/* radio_init has been tested to be good */
void radio_init(void) {
volatile uint32_t i;
@ -217,6 +254,19 @@ void radio_init(void) {
puts("\n\r");
}
puts("radio_init: ctov parameter 0x");
put_hex(ram_values[3]);
puts("\n\r");
for(i=0; i<16; i++) {
ctov[i] = get_ctov(i,ram_values[3]);
puts("radio_init: ctov[");
put_hex(i);
puts("] = 0x");
put_hex(ctov[i]);
puts("\n\r");
}
}
const uint32_t PSMVAL[19] = {
@ -333,25 +383,6 @@ const uint32_t VCODivF[16] = {
0x01555555,
};
const uint8_t ctov_4c[16] = {
0x0b,
0x0b,
0x0b,
0x0a,
0x0d,
0x0d,
0x0c,
0x0c,
0x0f,
0x0e,
0x0e,
0x0e,
0x11,
0x10,
0x10,
0x0f,
};
/* tested good */
#define ADDR_CHAN1 0x80009800
#define ADDR_CHAN2 (ADDR_CHAN1+12)
@ -376,7 +407,7 @@ void set_channel(uint8_t chan) {
reg(ADDR_CHAN4) = tmp;
tmp = tmp & 0xffffe0ff;
tmp = tmp | (((ctov_4c[chan])<<8)&0x1F00);
tmp = tmp | (((ctov[chan])<<8)&0x1F00);
reg(ADDR_CHAN4) = tmp;
/* duh! */
}