gomaomao/DIY-Multiprotocol-TX-Module
1
0
Fork 0
mirror of https://github.com/pascallanger/DIY-Multiprotocol-TX-Module.git synced 2025-12-18 22:54:44 +00:00
Code Issues Projects Releases Wiki Activity

_MyConfig.h

Browse Source
This commit is contained in:
Pascal Langer
2017-11-30 13:00:10 +01:00
parent 01bef23ac9
commit 28868e4c78
8 changed files with 67 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
Multiprotocol/A7105_SPI.ino
View File

@@ -165,6 +165,33 @@ void A7105_Strobe(uint8_t address) {
SPI_Write(address);
A7105_CSN_on;
}
// Fine tune A7105 LO base frequency
// this is required for some A7105 modules and/or RXs with inaccurate crystal oscillator
// arg: offset in +/-kHz
void A7105_AdjustLOBaseFreq(int16_t offset)
{
// LO base frequency = 32e6*(bip+(bfp/(2^16)))
uint8_t bip; // LO base frequency integer part
uint32_t bfp; // LO base frequency fractional part
if(offset < 0)
{
bip = 0x4a; // 2368 MHz
bfp = 0xffff+((offset<<11)/1000)+1;
}
else
{
bip = 0x4b; // 2400 MHz (default)
bfp = (offset<<11)/1000;
}
if(offset == 0)
bfp = 0x0002; // as per datasheet, not sure why recommended, but that's a +1kHz drift only ...
A7105_WriteReg( A7105_11_PLL_III, bip);
A7105_WriteReg( A7105_12_PLL_IV, (bfp >> 8) & 0xff);
A7105_WriteReg( A7105_13_PLL_V, bfp & 0xff);
}
#ifdef HUBSAN_A7105_INO
const uint8_t PROGMEM HUBSAN_A7105_regs[] = {
0xFF, 0x63, 0xFF, 0x0F, 0xFF, 0xFF, 0xFF ,0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x05, 0x04, 0xFF,