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55Hz ctcss tail detection rounding

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OneOfEleven
2023-09-13 10:31:45 +01:00
parent e3e2409854
commit ad2298aa30
1 changed files with 4 additions and 3 deletions
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7
driver/bk4819.c
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@ -288,7 +288,8 @@ void BK4819_SetCTCSSFrequency(uint32_t FreqControlWord)
void BK4819_Set55HzTailDetection(void) void BK4819_Set55HzTailDetection(void)
{ {
// CTC2 Frequency Control Word = round_nearest(25391 / 55) = 462 // CTC2 Frequency Control Word = round_nearest(25391 / 55) = 462
BK4819_WriteRegister(BK4819_REG_07, (1u << 13) | 462); const unsigned int ctcss_Hz = 55;
BK4819_WriteRegister(BK4819_REG_07, (1u << 13) | ((25391 + (ctcss_Hz / 2)) / ctcss_Hz)); // with rounding
} }
void BK4819_EnableVox(uint16_t VoxEnableThreshold, uint16_t VoxDisableThreshold) void BK4819_EnableVox(uint16_t VoxEnableThreshold, uint16_t VoxDisableThreshold)
@ -757,13 +758,13 @@ void BK4819_GenTail(uint8_t Tail)
void BK4819_EnableCDCSS(void) void BK4819_EnableCDCSS(void)
{ {
BK4819_GenTail(0); // CTC134 BK4819_GenTail(0); // CTC134
BK4819_WriteRegister(BK4819_REG_51, 0x804A); BK4819_WriteRegister(BK4819_REG_51, 0x804A);
} }
void BK4819_EnableCTCSS(void) void BK4819_EnableCTCSS(void)
{ {
BK4819_GenTail(4); // CTC55 BK4819_GenTail(4); // CTC55
BK4819_WriteRegister(BK4819_REG_51, 0x904A); BK4819_WriteRegister(BK4819_REG_51, 0x904A);
} }