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📝 KHz => kHz (#23512)

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This commit is contained in:
Scott Lahteine
2022-01-10 19:49:03 -06:00
parent c1d3e4634c
commit b6c37960e8
11 changed files with 16 additions and 16 deletions
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4
Marlin/Configuration_adv.h
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@@ -567,8 +567,8 @@
*
* USE_OCR2A_AS_TOP [undefined by default]
* Boards that use TIMER2 for PWM have limitations resulting in only a few possible frequencies on TIMER2:
* 16MHz MCUs: [62.5KHz, 31.4KHz (default), 7.8KHz, 3.92KHz, 1.95KHz, 977Hz, 488Hz, 244Hz, 60Hz, 122Hz, 30Hz]
* 20MHz MCUs: [78.1KHz, 39.2KHz (default), 9.77KHz, 4.9KHz, 2.44KHz, 1.22KHz, 610Hz, 305Hz, 153Hz, 76Hz, 38Hz]
* 16MHz MCUs: [62.5kHz, 31.4kHz (default), 7.8kHz, 3.92kHz, 1.95kHz, 977Hz, 488Hz, 244Hz, 60Hz, 122Hz, 30Hz]
* 20MHz MCUs: [78.1kHz, 39.2kHz (default), 9.77kHz, 4.9kHz, 2.44kHz, 1.22kHz, 610Hz, 305Hz, 153Hz, 76Hz, 38Hz]
* A greater range can be achieved by enabling USE_OCR2A_AS_TOP. But note that this option blocks the use of
* PWM on pin OC2A. Only use this option if you don't need PWM on 0C2A. (Check your schematic.)
* USE_OCR2A_AS_TOP sacrifices duty cycle control resolution to achieve this broader range of frequencies.

4
Marlin/src/HAL/AVR/fastio.cpp
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@@ -245,7 +245,7 @@ uint16_t set_pwm_frequency_hz(const_float_t hz, const float dca, const float dcb
float count = 0;
if (hz > 0 && (dca || dcb || dcc)) {
count = float(F_CPU) / hz; // 1x prescaler, TOP for 16MHz base freq.
uint16_t prescaler; // Range of 30.5Hz (65535) 64.5KHz (>31)
uint16_t prescaler; // Range of 30.5Hz (65535) 64.5kHz (>31)
if (count >= 255. * 256.) { prescaler = 1024; SET_CS(5, PRESCALER_1024); }
else if (count >= 255. * 64.) { prescaler = 256; SET_CS(5, PRESCALER_256); }
@@ -277,7 +277,7 @@ uint16_t set_pwm_frequency_hz(const_float_t hz, const float dca, const float dcb
// Restore the default for Timer 5
SET_WGM(5, PWM_PC_8); // PWM 8-bit (Phase Correct)
SET_COMS(5, NORMAL, NORMAL, NORMAL); // Do nothing
SET_CS(5, PRESCALER_64); // 16MHz / 64 = 250KHz
SET_CS(5, PRESCALER_64); // 16MHz / 64 = 250kHz
OCR5A = OCR5B = OCR5C = 0;
}
return round(count);

2
Marlin/src/HAL/DUE/fastio/G2_PWM.cpp
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@@ -25,7 +25,7 @@
* is NOT used to directly toggle pins. The ISR writes to the pin assigned to
* that interrupt.
*
* All PWMs use the same repetition rate. The G2 needs about 10KHz min in order to
* All PWMs use the same repetition rate. The G2 needs about 10kHz min in order to
* not have obvious ripple on the Vref signals.
*
* The data structures are setup to minimize the computation done by the ISR which

2
Marlin/src/HAL/DUE/pinsDebug.h
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@@ -53,7 +53,7 @@
* The net result is that both the g_pinStatus[pin] array and the PIO_OSR register
* needs to be looked at when determining if a pin is an input or an output.
*
* b) Due has only pins 6, 7, 8 & 9 enabled for PWMs. FYI - they run at 1KHz
* b) Due has only pins 6, 7, 8 & 9 enabled for PWMs. FYI - they run at 1kHz
*
* c) NUM_DIGITAL_PINS does not include the analog pins
*

2
Marlin/src/HAL/SAMD51/timers.cpp
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@@ -79,7 +79,7 @@ void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
rtc->MODE0.INTENCLR.reg = RTC_MODE0_INTENCLR_CMP0;
// RTC clock setup
OSC32KCTRL->RTCCTRL.reg = OSC32KCTRL_RTCCTRL_RTCSEL_XOSC32K; // External 32.768KHz oscillator
OSC32KCTRL->RTCCTRL.reg = OSC32KCTRL_RTCCTRL_RTCSEL_XOSC32K; // External 32.768kHz oscillator
// Stop timer, just in case, to be able to reconfigure it
rtc->MODE0.CTRLA.bit.ENABLE = false;

2
Marlin/src/HAL/STM32/sdio.cpp
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@@ -59,7 +59,7 @@ DMA_HandleTypeDef hdma_sdio;
/*
SDIO_INIT_CLK_DIV is 118
SDIO clock frequency is 48MHz / (TRANSFER_CLOCK_DIV + 2)
SDIO init clock frequency should not exceed 400KHz = 48MHz / (118 + 2)
SDIO init clock frequency should not exceed 400kHz = 48MHz / (118 + 2)
Default TRANSFER_CLOCK_DIV is 2 (118 / 40)
Default SDIO clock frequency is 48MHz / (2 + 2) = 12 MHz

2
Marlin/src/gcode/config/M672.cpp
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@@ -53,7 +53,7 @@
// b7 b6 b5 b4 ~b4 ... hi bits, NOT last bit
// b3 b2 b1 b0 ~b0 ... lo bits, NOT last bit
//
void M672_send(uint8_t b) { // bit rate requirement: 1KHz +/- 30%
void M672_send(uint8_t b) { // bit rate requirement: 1kHz +/- 30%
LOOP_L_N(bits, 14) {
switch (bits) {
default: { OUT_WRITE(SMART_EFFECTOR_MOD_PIN, !!(b & 0x80)); b <<= 1; break; } // send bit, shift next into place

2
Marlin/src/gcode/control/M3-M5.cpp
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@@ -43,7 +43,7 @@
*
* If no PWM pin is defined then M3/M4 just turns it on.
*
* At least 12.8KHz (50Hz * 256) is needed for Spindle PWM.
* At least 12.8kHz (50Hz * 256) is needed for Spindle PWM.
* Hardware PWM is required on AVR. ISRs are too slow.
*
* NOTE: WGM for timers 3, 4, and 5 must be either Mode 1 or Mode 5.

4
Marlin/src/module/endstops.cpp
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@@ -352,7 +352,7 @@ void Endstops::init() {
} // Endstops::init
// Called at ~1KHz from Temperature ISR: Poll endstop state if required
// Called at ~1kHz from Temperature ISR: Poll endstop state if required
void Endstops::poll() {
TERN_(PINS_DEBUGGING, run_monitor()); // Report changes in endstop status
@@ -403,7 +403,7 @@ void Endstops::not_homing() {
void Endstops::resync() {
if (!abort_enabled()) return; // If endstops/probes are disabled the loop below can hang
// Wait for Temperature ISR to run at least once (runs at 1KHz)
// Wait for Temperature ISR to run at least once (runs at 1kHz)
TERN(ENDSTOP_INTERRUPTS_FEATURE, update(), safe_delay(2));
while (TERN0(ENDSTOP_NOISE_THRESHOLD, endstop_poll_count)) safe_delay(1);
}

6
Marlin/src/module/temperature.cpp
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@@ -3007,8 +3007,8 @@ public:
};
/**
* Handle various ~1KHz tasks associated with temperature
* - Heater PWM (~1KHz with scaler)
* Handle various ~1kHz tasks associated with temperature
* - Heater PWM (~1kHz with scaler)
* - LCD Button polling (~500Hz)
* - Start / Read one ADC sensor
* - Advance Babysteps
@@ -3510,7 +3510,7 @@ void Temperature::isr() {
adc_sensor_state = next_sensor_state;
//
// Additional ~1KHz Tasks
// Additional ~1kHz Tasks
//
#if ENABLED(BABYSTEPPING) && DISABLED(INTEGRATED_BABYSTEPPING)

2
buildroot/share/PlatformIO/variants/MARLIN_F103VE_LONGER/hal_conf_custom.h
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@@ -118,7 +118,7 @@ extern "C" {
#endif
#ifndef LSE_STARTUP_TIMEOUT
#define LSE_STARTUP_TIMEOUT 50U // No 32.7KHz LSE on this board, reduced to avoid delays
#define LSE_STARTUP_TIMEOUT 50U // No 32.7kHz LSE on this board, reduced to avoid delays
#endif
/* Tip: To avoid modifying this file each time you need to use different HSE,