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tuner_e4k: add setting for common mode

This commit is contained in:
Christian Daniel 2012-03-06 14:43:03 +01:00
parent 6d95768e9c
commit 463a3f9c28
3 changed files with 31 additions and 0 deletions
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1
firmware/include/tuner_e4k.h
View File

@ -191,6 +191,7 @@ struct e4k_state {
int e4k_init(struct e4k_state *e4k);
int e4k_if_gain_set(struct e4k_state *e4k, uint8_t stage, int8_t value);
int e4k_mixer_gain_set(struct e4k_state *e4k, int8_t value);
int e4k_commonmode_set(struct e4k_state *e4k, int8_t value);
int e4k_tune_freq(struct e4k_state *e4k, uint32_t freq);
int e4k_tune_params(struct e4k_state *e4k, struct e4k_pll_params *p);
int e4k_compute_pll_params(struct e4k_pll_params *oscp, uint32_t fosc, uint32_t intended_flo);

20
firmware/sdr-test-project/main.c
View File

@ -295,6 +295,24 @@ static int cmd_tuner_dco_table(struct cmd_state *cs, enum cmd_op op,
return e4k_dc_offset_gen_table(&e4k);
}
static int cmd_tuner_commonmode(struct cmd_state *cs, enum cmd_op op,
const char *cmd, int argc, char **argv)
{
int32_t cm;
switch (op) {
case CMD_OP_SET:
if (argc < 1)
return -EINVAL;
cm = strtoul(argv[0], NULL, 10);
e4k_commonmode_set(&e4k, cm);
break;
default:
return -EINVAL;
}
return 0;
}
static struct cmd cmds[] = {
{ "tuner.init", CMD_OP_EXEC, cmd_tuner_init,
"Initialize the tuner" },
@ -312,6 +330,8 @@ static struct cmd cmds[] = {
"Perform DC offset calibration" },
{ "tuner.dc_table", CMD_OP_EXEC, cmd_tuner_dco_table,
"Generate DC offset table" },
{ "tuner.commonmode", CMD_OP_SET, cmd_tuner_commonmode,
"Switch common mode voltage" },
{ "si570.freq", CMD_OP_SET|CMD_OP_GET, cmd_si570_freq,
"Change the SI570 clock frequency" },

10
firmware/src/tuner_e4k.c
View File

@ -714,6 +714,16 @@ int e4k_mixer_gain_set(struct e4k_state *e4k, int8_t value)
return e4k_reg_set_mask(e4k, E4K_REG_GAIN2, 1, bit);
}
int e4k_commonmode_set(struct e4k_state *e4k, int8_t value)
{
if(value < 0)
return -EINVAL;
else if(value > 7)
return -EINVAL;
return e4k_reg_set_mask(e4k, E4K_REG_DC7, 7, value);
}
/***********************************************************************
* DC Offset */