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esp3s3 & esp32c3 PWM implements (#5215)
* esp3s3 pwm * esp32s3-pwm: added spi alias for esp32s3 for tests * esp32s3-pwm: fix linters * esp32s3-pwm: fix rename * esp32s3-pwm: replace if to switch * esp32s3-pwm: chip specific registry * esp32s3-pwm: fix linters
This commit is contained in:
Dima
deadprogram
@@ -0,0 +1,178 @@
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//go:build esp32c3
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package machine
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import "device/esp"
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// LEDC PWM for ESP32-C3: 4 timers (PWM0–PWM3), 6 channels per timer; each timer has its own frequency.
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// Range: frequency from a few Hz up to ~40 MHz (at 1-bit resolution); duty resolution 1–15 bits
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// (higher frequency gives lower resolution). Clock source: APB 80 MHz. Low-speed mode only.
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// See ESP-IDF LEDC driver, TRM LED PWM Controller.
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// GPIO matrix output signal indices for LEDC (soc/gpio_sig_map.h)
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const (
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LEDC_LS_SIG_OUT0_IDX = 45
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)
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const ledcChannelsC3 = 6
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var (
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PWM0 = &LEDCPWM{SigOutBase: LEDC_LS_SIG_OUT0_IDX, NumChannels: ledcChannelsC3, timerNum: 0}
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PWM1 = &LEDCPWM{SigOutBase: LEDC_LS_SIG_OUT0_IDX, NumChannels: ledcChannelsC3, timerNum: 1}
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PWM2 = &LEDCPWM{SigOutBase: LEDC_LS_SIG_OUT0_IDX, NumChannels: ledcChannelsC3, timerNum: 2}
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PWM3 = &LEDCPWM{SigOutBase: LEDC_LS_SIG_OUT0_IDX, NumChannels: ledcChannelsC3, timerNum: 3}
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)
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// chanOp implements LEDC low-speed channel ops for ESP32-C3 (channels 0–5 only).
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func (pwm *LEDCPWM) chanOp(ch uint8, op ledcChanOp, duty uint32, inverting bool) {
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invVal := uint32(0)
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if inverting {
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invVal = 1
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}
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switch ch {
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case 0:
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switch op {
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case ledcChanOpInit:
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esp.LEDC.SetCH0_CONF0_TIMER_SEL(uint32(pwm.timerNum))
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esp.LEDC.SetCH0_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH0_CONF0_IDLE_LV(0)
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esp.LEDC.SetCH0_HPOINT_HPOINT(0)
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esp.LEDC.SetCH0_DUTY_DUTY(0)
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esp.LEDC.SetCH0_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH0_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH0_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH0_CONF1_DUTY_START(1)
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esp.LEDC.SetCH0_CONF0_PARA_UP(1)
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case ledcChanOpSetDuty:
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esp.LEDC.SetCH0_DUTY_DUTY(duty)
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esp.LEDC.SetCH0_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH0_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH0_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH0_CONF1_DUTY_START(1)
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esp.LEDC.SetCH0_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH0_CONF0_PARA_UP(1)
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case ledcChanOpSetInvert:
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esp.LEDC.SetCH0_CONF0_IDLE_LV(invVal)
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}
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case 1:
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switch op {
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case ledcChanOpInit:
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esp.LEDC.SetCH1_CONF0_TIMER_SEL(uint32(pwm.timerNum))
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esp.LEDC.SetCH1_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH1_CONF0_IDLE_LV(0)
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esp.LEDC.SetCH1_HPOINT_HPOINT(0)
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esp.LEDC.SetCH1_DUTY_DUTY(0)
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esp.LEDC.SetCH1_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH1_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH1_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH1_CONF1_DUTY_START(1)
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esp.LEDC.SetCH1_CONF0_PARA_UP(1)
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case ledcChanOpSetDuty:
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esp.LEDC.SetCH1_DUTY_DUTY(duty)
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esp.LEDC.SetCH1_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH1_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH1_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH1_CONF1_DUTY_START(1)
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esp.LEDC.SetCH1_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH1_CONF0_PARA_UP(1)
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case ledcChanOpSetInvert:
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esp.LEDC.SetCH1_CONF0_IDLE_LV(invVal)
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}
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case 2:
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switch op {
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case ledcChanOpInit:
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esp.LEDC.SetCH2_CONF0_TIMER_SEL(uint32(pwm.timerNum))
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esp.LEDC.SetCH2_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH2_CONF0_IDLE_LV(0)
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esp.LEDC.SetCH2_HPOINT_HPOINT(0)
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esp.LEDC.SetCH2_DUTY_DUTY(0)
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esp.LEDC.SetCH2_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH2_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH2_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH2_CONF1_DUTY_START(1)
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esp.LEDC.SetCH2_CONF0_PARA_UP(1)
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case ledcChanOpSetDuty:
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esp.LEDC.SetCH2_DUTY_DUTY(duty)
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esp.LEDC.SetCH2_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH2_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH2_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH2_CONF1_DUTY_START(1)
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esp.LEDC.SetCH2_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH2_CONF0_PARA_UP(1)
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case ledcChanOpSetInvert:
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esp.LEDC.SetCH2_CONF0_IDLE_LV(invVal)
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}
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case 3:
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switch op {
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case ledcChanOpInit:
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esp.LEDC.SetCH3_CONF0_TIMER_SEL(uint32(pwm.timerNum))
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esp.LEDC.SetCH3_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH3_CONF0_IDLE_LV(0)
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esp.LEDC.SetCH3_HPOINT_HPOINT(0)
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esp.LEDC.SetCH3_DUTY_DUTY(0)
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esp.LEDC.SetCH3_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH3_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH3_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH3_CONF1_DUTY_START(1)
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esp.LEDC.SetCH3_CONF0_PARA_UP(1)
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case ledcChanOpSetDuty:
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esp.LEDC.SetCH3_DUTY_DUTY(duty)
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esp.LEDC.SetCH3_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH3_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH3_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH3_CONF1_DUTY_START(1)
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esp.LEDC.SetCH3_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH3_CONF0_PARA_UP(1)
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case ledcChanOpSetInvert:
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esp.LEDC.SetCH3_CONF0_IDLE_LV(invVal)
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}
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case 4:
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switch op {
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case ledcChanOpInit:
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esp.LEDC.SetCH4_CONF0_TIMER_SEL(uint32(pwm.timerNum))
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esp.LEDC.SetCH4_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH4_CONF0_IDLE_LV(0)
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esp.LEDC.SetCH4_HPOINT_HPOINT(0)
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esp.LEDC.SetCH4_DUTY_DUTY(0)
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esp.LEDC.SetCH4_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH4_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH4_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH4_CONF1_DUTY_START(1)
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esp.LEDC.SetCH4_CONF0_PARA_UP(1)
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case ledcChanOpSetDuty:
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esp.LEDC.SetCH4_DUTY_DUTY(duty)
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esp.LEDC.SetCH4_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH4_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH4_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH4_CONF1_DUTY_START(1)
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esp.LEDC.SetCH4_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH4_CONF0_PARA_UP(1)
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case ledcChanOpSetInvert:
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esp.LEDC.SetCH4_CONF0_IDLE_LV(invVal)
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}
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case 5:
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switch op {
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case ledcChanOpInit:
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esp.LEDC.SetCH5_CONF0_TIMER_SEL(uint32(pwm.timerNum))
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esp.LEDC.SetCH5_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH5_CONF0_IDLE_LV(0)
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esp.LEDC.SetCH5_HPOINT_HPOINT(0)
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esp.LEDC.SetCH5_DUTY_DUTY(0)
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esp.LEDC.SetCH5_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH5_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH5_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH5_CONF1_DUTY_START(1)
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esp.LEDC.SetCH5_CONF0_PARA_UP(1)
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case ledcChanOpSetDuty:
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esp.LEDC.SetCH5_DUTY_DUTY(duty)
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esp.LEDC.SetCH5_CONF1_DUTY_CYCLE(1)
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esp.LEDC.SetCH5_CONF1_DUTY_NUM(1)
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esp.LEDC.SetCH5_CONF1_DUTY_INC(1)
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esp.LEDC.SetCH5_CONF1_DUTY_START(1)
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esp.LEDC.SetCH5_CONF0_SIG_OUT_EN(1)
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esp.LEDC.SetCH5_CONF0_PARA_UP(1)
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case ledcChanOpSetInvert:
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esp.LEDC.SetCH5_CONF0_IDLE_LV(invVal)
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}
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}
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}
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