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add ADC & ADC monitoring

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This commit is contained in:
Edward Emelianov
2026-03-10 22:40:45 +03:00
parent 8e78a12f06
commit 3802f7d2cb
15 changed files with 338 additions and 36 deletions
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64
F0:F030,F042,F072/usbcan_gpio/gpio.c
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@@ -19,10 +19,11 @@
#include <stm32f0.h>
#include <string.h>
#include "adc.h"
#include "flash.h"
#include "gpio.h"
static uint16_t monitor_mask[2] = {0}; // pins to monitor == 1 (ONLY GPIO!!!)
static uint16_t monitor_mask[2] = {0}; // pins to monitor == 1 (ONLY GPIO and ADC)
static uint16_t oldstates[2][16] = {0}; // previous state (16 bits - as some pins could be analog)
// strings for keywords
@@ -134,6 +135,22 @@ int set_pinfunc(uint8_t port, uint8_t pin, pinconfig_t *pcfg){
return TRUE;
}
/**
* @brief get_adc_channel - get ADC channel number for given pin
* @param port - 0/1 (GPIOA/GPIOB)
* @param pin - 0..16
* @return ADC channel number or -1
*/
TRUE_INLINE int8_t get_adc_channel(uint8_t port, uint8_t pin){
if(port == 0){ // GPIOA
if (pin <= 7) return pin; // PA0..PA7 -> IN0..IN7
}else{ // GPIOB
if(pin == 0) return 8; // PB0 -> IN8
if(pin == 1) return 9; // PB1 -> IN9
}
return -1; // No ADC channel on this pin
}
// reinit all GPIO registers due to config; also configure (if need) USART1/2, SPI1 and I2C1
int gpio_reinit(){
bzero(monitor_mask, sizeof(monitor_mask));
@@ -167,7 +184,19 @@ int gpio_reinit(){
int shift4 = (pin - 8) << 4;
gpio->AFR[1] = (gpio->AFR[1] & ~(0xf << shift4)) | (cfg->afno << shift4);
}
if(cfg->monitor && cfg->mode != MODE_AF) monitor_mask[port] |= (1 << pin);
if(cfg->monitor && cfg->mode != MODE_AF){
monitor_mask[port] |= (1 << pin);
if(cfg->mode == MODE_ANALOG){
if(cfg->threshold > 4095) cfg->threshold = 4095; // no threshold
int8_t chan = get_adc_channel(port, pin);
if(chan >= 0){
oldstates[port][pin] = getADCval(chan);
}
}else{
// ÃÉÆÒÏ×ÏÊ ÒÅÖÉÍ  ÓÏÈÒÁÎÑÅÍ ÔÅËÕÝÅÅ ÓÏÓÔÏÑÎÉÅ IDR
oldstates[port][pin] = (gpio->IDR >> pin) & 1;
}
}
}
}
// TODO: configure USART, SPI etc
@@ -216,8 +245,14 @@ int16_t pin_in(uint8_t port, uint8_t pin){
if(GPIOx->IDR & (1<<pin)) val = 1;
else val = 0;
break;
// case MODE_ANALOG:
default: // TODO: add ADC!
case MODE_ANALOG:{
int8_t chan = get_adc_channel(port, pin);
if(chan >= 0){
return (int16_t)getADCval(chan); // getADCval ×ÏÚ×ÒÁÝÁÅÔ uint16_t
}
}
break;
default:
break;
}
return val;
@@ -241,11 +276,22 @@ uint16_t gpio_alert(uint8_t port){
uint8_t curm = moder & 3;
if((curm == MODE_AF) || 0 == (monitor_mask[port] & curpinbit)) continue; // monitor also OUT (if OD)
// TODO: add AIN
if(curm == MODE_ANALOG) continue;
uint16_t curval = (GPIOx->IDR & curpinbit) ? 1 : 0;
if(oldstate[pin] != curval){
oldstate[pin] = curval;
alert |= curpinbit;
if(curm == MODE_ANALOG){
int8_t chan = get_adc_channel(port, pin);
if(chan < 0) continue; // can't be in normal case
uint16_t cur = getADCval(chan);
uint16_t thresh = the_conf.pinconfig[port][pin].threshold;
uint16_t diff = (cur > oldstate[pin]) ? (cur - oldstate[pin]) : (oldstate[pin] - cur);
if(diff > thresh){
oldstate[pin] = cur;
alert |= curpinbit;
}
}else{
uint16_t curval = (GPIOx->IDR & curpinbit) ? 1 : 0;
if(oldstate[pin] != curval){
oldstate[pin] = curval;
alert |= curpinbit;
}
}
}
return alert;