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Code Issues Releases Activity

FM radio updates

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OneOfEleven
2023-10-31 06:56:21 +00:00
parent b85ea562c7
commit 0a9765b2bd
36 changed files with 152 additions and 167 deletions
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31
driver/bk1080.c
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@ -23,8 +23,8 @@
#include "misc.h"
//#define CHAN_SPACING 0u // 200kHz
#define CHAN_SPACING 1u // 100kHz
//#define CHAN_SPACING 2u // 50kHz
//#define CHAN_SPACING 1u // 100kHz
#define CHAN_SPACING 2u // 50kHz
#define VOLUME 15u
@ -101,8 +101,8 @@ static const uint16_t BK1080_RegisterTable[] =
bool is_init;
uint16_t BK1080_freq_lower;
uint16_t BK1080_freq_upper;
uint16_t BK1080_BaseFrequency;
uint16_t BK1080_FrequencyDeviation;
uint16_t BK1080_freq_base;
int16_t BK1080_freq_offset;
void BK1080_Init(const uint16_t frequency, const bool initialise)
{
@ -115,6 +115,9 @@ void BK1080_Init(const uint16_t frequency, const bool initialise)
if (!is_init)
{
BK1080_freq_base = 0;
BK1080_freq_offset = 0;
BK1080_freq_lower = 0xffff;
BK1080_freq_upper = 0;
@ -201,14 +204,14 @@ void BK1080_WriteRegister(BK1080_Register_t Register, uint16_t Value)
I2C_Stop();
}
void BK1080_Mute(bool Mute)
void BK1080_Mute(const bool Mute)
{
BK1080_WriteRegister(BK1080_REG_02_POWER_CONFIGURATION, (1u << 9) | (1u << 0) | (Mute ? 1u << 14 : 0u));
}
void BK1080_SetFrequency(uint16_t Frequency)
{
uint16_t channel;
int channel;
uint16_t band = 0;
// #if (ARRAY_SIZE(FM_RADIO_FREQ_BAND_TABLE) > 1) // compiler doesn't like this :(
@ -229,18 +232,20 @@ void BK1080_SetFrequency(uint16_t Frequency)
#endif
channel = Frequency - FM_RADIO_FREQ_BAND_TABLE[band].lower; // 100kHz channel spacing
// channel = (int)Frequency - FM_RADIO_FREQ_BAND_TABLE[band].lower; // 100kHz channel spacing
channel = ((int)Frequency - FM_RADIO_FREQ_BAND_TABLE[band].lower) * 2; // 50kHz channel spacing
channel = (channel < 0) ? 0 : (channel > 1023) ? 1023 : channel;
BK1080_WriteRegister(BK1080_REG_05_SYSTEM_CONFIGURATION2, (SEEK_THRESHOLD << 8) | (band << 6) | (CHAN_SPACING << 4) | (VOLUME << 0));
BK1080_WriteRegister(BK1080_REG_03_CHANNEL, channel);
BK1080_WriteRegister(BK1080_REG_03_CHANNEL, (uint16_t)channel);
SYSTEM_DelayMs(1);
BK1080_WriteRegister(BK1080_REG_03_CHANNEL, channel | (1u << 15));
BK1080_WriteRegister(BK1080_REG_03_CHANNEL, (uint16_t)channel | (1u << 15));
}
uint16_t BK1080_GetFrequencyDeviation(uint16_t Frequency)
int16_t BK1080_get_freq_offset(const uint16_t Frequency)
{
BK1080_BaseFrequency = Frequency;
BK1080_FrequencyDeviation = BK1080_ReadRegister(BK1080_REG_07) >> 4;
return BK1080_FrequencyDeviation;
BK1080_freq_base = Frequency;
BK1080_freq_offset = (int16_t)BK1080_ReadRegister(BK1080_REG_07) / 16;
return BK1080_freq_offset;
}