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fixed some errors; renew readme

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This commit is contained in:
Edward Emelianov
2026-10-01 16:23:50 +03:00
parent 8200366090
commit a2cb827a76
12 changed files with 472 additions and 296 deletions
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20
F1:F103/FX3U/adc.c
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@@ -33,10 +33,11 @@ void adc_setup(){
DMA1_Channel1->CCR = DMA_CCR_MINC | DMA_CCR_MSIZE_0 | DMA_CCR_PSIZE_0
| DMA_CCR_CIRC | DMA_CCR_PL | DMA_CCR_EN;
RCC->CFGR = (RCC->CFGR & ~(RCC_CFGR_ADCPRE)) | RCC_CFGR_ADCPRE_DIV8; // ADC clock = RCC / 8
// sampling time - 239.5 cycles for channels 0, 16 and 17
ADC1->SMPR2 = ADC_SMPR2_SMP0;
ADC1->SMPR1 = ADC_SMPR1_SMP16 | ADC_SMPR1_SMP17;
// sequence order: 1[0]->3[1]->14[2]->15[3]->10[4]->11[5] -> 16[tsen] -> 17[vdd]
// sampling time - 239.5 cycles for all channels
ADC1->SMPR2 = ADC_SMPR2_SMP1 | ADC_SMPR2_SMP3;
ADC1->SMPR1 = ADC_SMPR1_SMP10 | ADC_SMPR1_SMP11 | ADC_SMPR1_SMP12 | ADC_SMPR1_SMP13 |
ADC_SMPR1_SMP14 | ADC_SMPR1_SMP15 | ADC_SMPR1_SMP16 | ADC_SMPR1_SMP17;
// sequence order: 1[0]->3[1]->14[2]->15[3]->10[4]->11[5] ->12[pot0] ->13[pot1] -> 16[tsen] -> 17[vdd]
ADC1->SQR3 = (1 << 0) | (3<<5) | (14 << 10) | (15 << 15) | (10 << 20) | (11 << 25);
ADC1->SQR2 = (12 << 0) | (13 << 5) | (16 << 10) | (17 << 15);
ADC1->SQR1 = (ADC_CHANNELS - 1) << 20; // amount of conversions
@@ -89,16 +90,16 @@ uint16_t getADCval(int nch){
uint32_t getADCvoltage(int nch){
uint32_t v = getADCval(nch);
v *= getVdd();
v /= 0xfff; // 12bit ADC
v >>= 12; // 12bit ADC
return v;
}
// return MCU temperature (degrees of celsius * 10)
int32_t getMCUtemp(){
// Temp = (V25 - Vsense)/Avg_Slope + 25
// V_25 = 1.45V, Slope = 4.3e-3
// V_25 = 1.43V, Slope = 4.3e-3
int32_t Vsense = getVdd() * getADCval(ADC_CH_TSEN);
int32_t temperature = 593920 - Vsense; // 593920 == 145*4096
int32_t temperature = 585728 - Vsense; // 585728 == 143*4096
temperature /= 172; // == /(4096*10*4.3e-3), 10 - to convert from *100 to *10
temperature += 250;
return(temperature);
@@ -106,7 +107,8 @@ int32_t getMCUtemp(){
// return Vdd * 100 (V)
uint32_t getVdd(){
uint32_t vdd = 120 * 4096; // 1.2V
vdd /= getADCval(ADC_CH_VDD);
uint32_t vdd = 120 << 12; // 1.2V
uint32_t val = getADCval(ADC_CH_VDD);
if(val) vdd /= val;
return vdd;
}