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start adding PWM

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This commit is contained in:
Edward Emelianov
2026-03-15 02:24:58 +03:00
parent 27eb723d80
commit 61262435a8
9 changed files with 175 additions and 22 deletions
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100
F0:F030,F042,F072/usbcan_gpio/gpio.c
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@@ -42,41 +42,93 @@ typedef struct{
#define CANUSART(x) ((x) & (1<<FUNC_USART))
#define CANSPI(x) ((x) & (1<<FUNC_SPI))
#define CANI2C(x) ((x) & (1<<FUNC_I2C))
#define CANPWM(x) ((x) & (1<<FUNC_PWM))
// AF for USART, SPI, I2C:
#define _U(x) [FUNC_USART] = x
// _S(0) or _U(0) have no sence, but lets understand that this pin have SPI or USART
#define _S(x) [FUNC_SPI] = x
#define _I(x) [FUNC_I2C] = x
#define _P(x) [FUNC_PWM] = x
// Here included only common AF for STM32F042 and STM32F072 and without negative timer outputs (stars - collisions)
static const pinprops_t pin_props[2][16] = {
[0] = { // PORT A
[0] = { .funcs = 0b00000001, .AF = {0}}, // PA0: ADC0, AF2 (TIM2_CH1)
[1] = { .funcs = 0b00000001, .AF = {0}}, // PA1: ADC1, AF2 (TIM2_CH2)
[2] = { .funcs = 0b00000011, .AF = {_U(1)}}, // PA2: ADC2, AF2 (TIM2_CH3), AF1 (USART2_TX)
[3] = { .funcs = 0b00000011, .AF = {_U(1)}}, // PA3: ADC3, AF2 (TIM2_CH4), AF1 (USART2_RX)
[0] = { .funcs = 0b00000001, .AF = {0}}, // PA0: ADC0
[1] = { .funcs = 0b00010001, .AF = {_P(2)}}, // PA1: ADC1, AF2 (TIM2_CH2*)
[2] = { .funcs = 0b00010011, .AF = {_U(1), _P(2)}}, // PA2: ADC2, AF2 (TIM2_CH3**), AF1 (USART2_TX)
[3] = { .funcs = 0b00010011, .AF = {_U(1), _P(2)}}, // PA3: ADC3, AF2 (TIM2_CH4***), AF1 (USART2_RX)
[5] = { .funcs = 0b00000101, .AF = {_S(0)}}, // PA5: ADC5, AF9 (SPI1_SCK)
[6] = { .funcs = 0b00000101, .AF = {_S(0)}}, // PA6: ADC6, AF0 (SPI1_MISO)
[7] = { .funcs = 0b00000101, .AF = {_S(0)}}, // PA7: ADC7, AF0 (SPI1_MOSI)
[9] = { .funcs = 0b00000010, .AF = {_U(1)}}, // PA9: AF1 (USART1_TX)
[10] = { .funcs = 0b00000010, .AF = {_U(1)}}, // PA10: AF1 (USART1_RX)
[6] = { .funcs = 0b00010101, .AF = {_S(0), _P(5)}}, // PA6: ADC6, AF0 (SPI1_MISO), AF5 (TIM16_CH1)
[7] = { .funcs = 0b00010101, .AF = {_S(0), _P(4)}}, // PA7: ADC7, AF0 (SPI1_MOSI), AF4 (TIM14_CH1)
[9] = { .funcs = 0b00010010, .AF = {_U(1), _P(2)}}, // PA9: AF1 (USART1_TX), AF2 (TIM1_CH2)
[10] = { .funcs = 0b00010010, .AF = {_U(1), _P(2)}}, // PA10: AF1 (USART1_RX), AF2 (TIM1_CH3)
},
[1] = { // PORT B
[0] = { .funcs = 0b00000001, .AF = {0}}, // PB0: ADC8, AF1 (TIM3_CH3), AF2 (TIM1_CH2N)
[1] = { .funcs = 0b00000001, .AF = {0}}, // PB1: ADC9, AF0 (TIM14_CH1), AF1 (TIM3_CH4), AF2 (TIM1_CH3N)
[0] = { .funcs = 0b00010001, .AF = {_P(1)}}, // PB0: ADC8, AF1 (TIM3_CH3)
[1] = { .funcs = 0b00010001, .AF = {_P(1)}}, // PB1: ADC9, AF1 (TIM3_CH4)
[2] = { .funcs = 0b00000000, .AF = {0}}, // PB2: nothing except GPIO
[3] = { .funcs = 0b00000100, .AF = {_S(0)}}, // PB3: AF0, (SPI1_SCK), AF2 (TIM2_CH2)
[4] = { .funcs = 0b00000100, .AF = {_S(0)}}, // PB4: AF0 (SPI1_MISO), AF1 (TIM3_CH1)
[5] = { .funcs = 0b00000100, .AF = {_S(0)}}, // PB5: AF0 (SPI1_MOSI), AF1 (TIM3_CH2)
[6] = { .funcs = 0b00001010, .AF = {_U(0), _I(1)}}, // PB6: AF0 (USART1_TX), AF1 (I2C1_SCL), AF2 (TIM16_CH1N)
[7] = { .funcs = 0b00001010, .AF = {_U(0), _I(1)}}, // PB7: AF0 (USART1_RX), AF1 (I2C1_SDA), AF2 (TIM17_CH1N)
[10] = { .funcs = 0b00001000, .AF = {_I(1)}}, // PB10: AF1 (I2C1_SCL), AF2 (TIM2_CH3)
[11] = { .funcs = 0b00001000, .AF = {_I(1)}}, // PB11: AF1 (I2C1_SDA), AF2 (TIM2_CH4)
[3] = { .funcs = 0b00010100, .AF = {_S(0), _P(2)}}, // PB3: AF0, (SPI1_SCK), AF2 (TIM2_CH2*)
[4] = { .funcs = 0b00010100, .AF = {_S(0), _P(1)}}, // PB4: AF0 (SPI1_MISO), AF1 (TIM3_CH1)
[5] = { .funcs = 0b00010100, .AF = {_S(0), _P(1)}}, // PB5: AF0 (SPI1_MOSI), AF1 (TIM3_CH2)
[6] = { .funcs = 0b00001010, .AF = {_U(0), _I(1)}}, // PB6: AF0 (USART1_TX), AF1 (I2C1_SCL)
[7] = { .funcs = 0b00001010, .AF = {_U(0), _I(1)}}, // PB7: AF0 (USART1_RX), AF1 (I2C1_SDA)
[10] = { .funcs = 0b00011000, .AF = {_I(1), _P(2)}}, // PB10: AF1 (I2C1_SCL), AF2 (TIM2_CH3**)
[11] = { .funcs = 0b00011000, .AF = {_I(1), _P(2)}}, // PB11: AF1 (I2C1_SDA), AF2 (TIM2_CH4***)
}
};
#undef _U
#undef _S
#undef _I
#if 0
PWM (start - collisions):
PxN XY (XY: TIMX_CHY)
PA1 22 *
PA2 23 **
PA3 24 ***
PA6 161
PA7 141
PA9 12
PA10 13
PB0 33
PB1 34
PB3 22 *
PB4 31
PB5 32
PB10 23 **
PB11 24 ***
-> need to set up timers / channels
TIM1 / 2 3
TIM2 / 2 3 4
TIM3 / 1 2 3 4
TIM14 / 1
TIM16 / 1
#endif
#define PT(t, ch) {.tim = t, .chidx = ch}
#define PTC(t, ch, P, p) {.tim = t, .chidx = ch, .collision = 1, .collport = P, .collpin = p}
static const pwmtimer_t timer_map[2][16] = {
[0] = {
[1] = PTC(TIM2, 1, 1, 3),
[2] = PTC(TIM2, 2, 1, 10),
[3] = PTC(TIM2, 3, 1, 11),
[6] = PT(TIM16, 0),
[7] = PT(TIM14, 0),
[9] = PT(TIM1, 1),
[10] = PT(TIM1, 2)
},
[1] = {
[0] = PT(TIM3, 2),
[1] = PT(TIM3, 3),
[3] = PTC(TIM2, 1, 0, 1),
[4] = PT(TIM3, 0),
[5] = PT(TIM3, 1),
[10] = PTC(TIM2, 2, 0, 2),
[11] = PTC(TIM2, 3, 0, 3)
}
};
#undef PT
#undef PTC
typedef struct{
uint8_t isrx : 1;
@@ -434,3 +486,17 @@ uint16_t gpio_alert(uint8_t port){
}
return alert;
}
/**
* @brief canPWM - check if pin have PWM ability
* @param port - port (0/1 for GPIOA/GPIOB)
* @param pin - pin (0..15)
* @param t (o) - struct for pin's PWM timer
* @return TRUE if can, FALSE if no
*/
int canPWM(uint8_t port, uint8_t pin, pwmtimer_t *t){
if(port > 1 || pin > 15) return 0;
if(t) *t = timer_map[port][pin];
if(timer_map[port][pin].tim) return TRUE;
return FALSE;
}