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Make the FM/315 definable.

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cnlohr
2024-06-13 23:58:56 -07:00
parent ece712825e
commit b4ed514713
1 changed files with 12 additions and 2 deletions
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ch32v/ch32v003-timer/loratest.c
+12 -2
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@@ -54,6 +54,8 @@ SOFTWARE.
#include "LoRa-SDR-Code.h" #include "LoRa-SDR-Code.h"
#define FM_TRANSMITTER_SWEEP
//#define LORAWAN //#define LORAWAN
//#define TEST_TONE //#define TEST_TONE
@@ -373,9 +375,13 @@ void LoopFunction2()
while( here != tail ) while( here != tail )
{ {
#ifdef FM_TRANSMITTER_SWEEP
// 97.7MHz FM Station
uint32_t cp = ((SysTick->CNT>>3)&0x3fff)+0x12900;
#else
// 315MHz
uint32_t cp = 0x1bfc3; uint32_t cp = 0x1bfc3;
//((SysTick->CNT>>3)&0x3fff)+0x12900; (@f>>12) - 97.7MHz FM. if paired with TIM_OC3M_0 | TIM_OC3M_1 | TIM_OC3PE | TIM_OC3FE runf>>12, 12 #endif
// 0x1bfc0 = Exactly 315MHz if paired with TIM_OC3M_2 | TIM_OC3M_1 | TIM_OC3PE | TIM_OC3FE, and run_f>>12? 12?
*(here++) = tablef[run_f>>12]; *(here++) = tablef[run_f>>12];
run_f &= (1<<12)-1; run_f &= (1<<12)-1;
run_f += cp; run_f += cp;
@@ -465,7 +471,11 @@ int main()
// 4, 5: Nothing // 4, 5: Nothing
// 6: "Fast PWM mode 1" // 6: "Fast PWM mode 1"
// 7: Flipping (Further out) // 7: Flipping (Further out)
#ifdef FM_TRANSMITTER_SWEEP
TIM1->CHCTLR2 = TIM_OC3M_0 | TIM_OC3M_1 | TIM_OC3PE | TIM_OC3FE;
#else
TIM1->CHCTLR2 = TIM_OC3M_2 | TIM_OC3M_1 | TIM_OC3PE | TIM_OC3FE; TIM1->CHCTLR2 = TIM_OC3M_2 | TIM_OC3M_1 | TIM_OC3PE | TIM_OC3FE;
#endif
// Compare 1 = for triggering // Compare 1 = for triggering
TIM1->CHCTLR1 = TIM_OC1M_2 | TIM_OC1M_1; TIM1->CHCTLR1 = TIM_OC1M_2 | TIM_OC1M_1;