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FM radio band selection #230

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This commit is contained in:
Krzysiek Egzmont
2024-01-15 17:04:56 +01:00
parent adbc466c49
commit 46e2d1a0fd
10 changed files with 124 additions and 60 deletions
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41
driver/bk1080.c
View File

@@ -39,11 +39,16 @@ static bool gIsInitBK1080;
uint16_t BK1080_BaseFrequency;
uint16_t BK1080_FrequencyDeviation;
void BK1080_Init(uint16_t Frequency, bool bDoScan)
void BK1080_Init0(void)
{
BK1080_Init(0,0/*,0*/);
}
void BK1080_Init(uint16_t freq, uint8_t band/*, uint8_t space*/)
{
unsigned int i;
if (bDoScan) {
if (freq) {
GPIO_ClearBit(&GPIOB->DATA, GPIOB_PIN_BK1080);
if (!gIsInitBK1080) {
@@ -63,8 +68,8 @@ void BK1080_Init(uint16_t Frequency, bool bDoScan)
BK1080_WriteRegister(BK1080_REG_02_POWER_CONFIGURATION, 0x0201);
}
BK1080_WriteRegister(BK1080_REG_05_SYSTEM_CONFIGURATION2, 0x0A5F);
BK1080_SetFrequency(Frequency);
BK1080_WriteRegister(BK1080_REG_05_SYSTEM_CONFIGURATION2, 0x0A1F);
BK1080_SetFrequency(freq, band/*, space*/);
}
else {
BK1080_WriteRegister(BK1080_REG_02_POWER_CONFIGURATION, 0x0241);
@@ -100,9 +105,19 @@ void BK1080_Mute(bool Mute)
BK1080_WriteRegister(BK1080_REG_02_POWER_CONFIGURATION, Mute ? 0x4201 : 0x0201);
}
void BK1080_SetFrequency(uint16_t frequency)
void BK1080_SetFrequency(uint16_t frequency, uint8_t band/*, uint8_t space*/)
{
uint16_t channel = frequency - 760;
//uint8_t spacings[] = {20,10,5};
//space %= 3;
uint16_t channel = (frequency - BK1080_GetFreqLoLimit(band))/* * 10 / spacings[space]*/;
uint16_t regval = BK1080_ReadRegister(BK1080_REG_05_SYSTEM_CONFIGURATION2);
regval = (regval & ~(0b11 << 6)) | ((band & 0b11) << 6);
//regval = (regval & ~(0b11 << 4)) | ((space & 0b11) << 4);
BK1080_WriteRegister(BK1080_REG_05_SYSTEM_CONFIGURATION2, regval);
BK1080_WriteRegister(BK1080_REG_03_CHANNEL, channel);
SYSTEM_DelayMs(10);
BK1080_WriteRegister(BK1080_REG_03_CHANNEL, channel | 0x8000);
@@ -113,3 +128,17 @@ void BK1080_GetFrequencyDeviation(uint16_t Frequency)
BK1080_BaseFrequency = Frequency;
BK1080_FrequencyDeviation = BK1080_ReadRegister(BK1080_REG_07) / 16;
}
uint16_t BK1080_GetFreqLoLimit(uint8_t band)
{
uint16_t lim[] = {875, 760, 760, 640};
return lim[band % 4];
}
uint16_t BK1080_GetFreqHiLimit(uint8_t band)
{
band %= 4;
uint16_t lim[] = {1080, 1080, 900, 760};
return lim[band % 4];
}

7
driver/bk1080.h
View File

@@ -24,11 +24,14 @@
extern uint16_t BK1080_BaseFrequency;
extern uint16_t BK1080_FrequencyDeviation;
void BK1080_Init(uint16_t Frequency, bool bDoScan);
void BK1080_Init0(void);
void BK1080_Init(uint16_t Frequency, uint8_t band/*, uint8_t space*/);
uint16_t BK1080_ReadRegister(BK1080_Register_t Register);
void BK1080_WriteRegister(BK1080_Register_t Register, uint16_t Value);
void BK1080_Mute(bool Mute);
void BK1080_SetFrequency(uint16_t frequency);
uint16_t BK1080_GetFreqLoLimit(uint8_t band);
uint16_t BK1080_GetFreqHiLimit(uint8_t band);
void BK1080_SetFrequency(uint16_t frequency, uint8_t band/*, uint8_t space*/);
void BK1080_GetFrequencyDeviation(uint16_t Frequency);
#endif