waveform: Install a new Arduino IDE menu and a new PIO #define

cores/esp8266/core_esp8266_waveform.cpp

@@ -39,6 +39,8 @@
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */
 
+#ifdef WAVEFORM_LOCKED_PHASE
+
 #include "core_esp8266_waveform.h"
 #include <Arduino.h>
 #include "ets_sys.h"
@@ -434,3 +436,5 @@ static ICACHE_RAM_ATTR void timer1Interrupt() {
   // Register access is fast and edge IRQ was configured before.
   T1L = nextEventCcys;
 }
+
+#endif // WAVEFORM_LOCKED_PHASE

cores/esp8266/core_esp8266_waveform.h

@@ -39,6 +39,8 @@
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */
 
+#ifdef WAVEFORM_LOCKED_PHASE
+
 #include <Arduino.h>
 
 #ifndef __ESP8266_WAVEFORM_H
@@ -86,4 +88,6 @@ void setTimer1Callback(uint32_t (*fn)());
 }
 #endif
 
-#endif
+#endif // __ESP8266_WAVEFORM_H
+
+#endif // WAVEFORM_LOCKED_PHASE

cores/esp8266/core_esp8266_wiring_pwm.cpp

@@ -26,21 +26,12 @@
 
 extern "C" {
 
-static uint32_t analogMap = 0;
 static int32_t analogScale = 255;  // Match upstream default, breaking change from 2.x.x
-static uint16_t analogFreq = 1000;
 
-extern void __analogWriteRange(uint32_t range) {
-  if ((range >= 15) && (range <= 65535)) {
-    analogScale = range;
-  }
-}
+#ifdef WAVEFORM_LOCKED_PHASE
 
-extern void __analogWriteResolution(int res) {
-  if ((res >= 4) && (res <= 16)) {
-    analogScale = (1 << res) - 1;
-  }
-}
+static uint32_t analogMap = 0;
+static uint16_t analogFreq = 1000;
 
 extern void __analogWriteFreq(uint32_t freq) {
   if (freq < 100) {
@@ -82,6 +73,24 @@ extern void __analogWrite(uint8_t pin, int val) {
   }
 }
 
+#endif // WAVEFORM_LOCKED_PHASE
+
+#ifdef WAVEFORM_LOCKED_PWM
+
+#endif // WAVEFORM_LOCKED_PWM
+
+extern void __analogWriteRange(uint32_t range) {
+  if ((range >= 15) && (range <= 65535)) {
+    analogScale = range;
+  }
+}
+
+extern void __analogWriteResolution(int res) {
+  if ((res >= 4) && (res <= 16)) {
+    analogScale = (1 << res) - 1;
+  }
+}
+
 extern void analogWrite(uint8_t pin, int val) __attribute__((weak, alias("__analogWrite")));
 extern void analogWriteFreq(uint32_t freq) __attribute__((weak, alias("__analogWriteFreq")));
 extern void analogWriteRange(uint32_t range) __attribute__((weak, alias("__analogWriteRange")));

libraries/Servo/src/Servo.cpp

@@ -69,8 +69,13 @@ uint8_t Servo::attach(int pin, uint16_t minUs, uint16_t maxUs)
 uint8_t Servo::attach(int pin, uint16_t minUs, uint16_t maxUs, int value)
 {
   if (!_attached) {
+#ifdef WAVEFORM_LOCKED_PHASE
     pinMode(pin, OUTPUT);
     digitalWrite(pin, LOW);
+#else
+    digitalWrite(pin, LOW);
+    pinMode(pin, OUTPUT);
+#endif
     _pin = pin;
     _attached = true;
   }
@@ -115,9 +120,14 @@ void Servo::writeMicroseconds(int value)
   _valueUs = value;
   if (_attached) {
     _servoMap &= ~(1 << _pin);
+#ifdef WAVEFORM_LOCKED_PHASE
     // Find the first GPIO being generated by checking GCC's find-first-set (returns 1 + the bit of the first 1 in an int32_t)
     int phaseReference = __builtin_ffs(_servoMap) - 1;
-    if (startWaveform(_pin, _valueUs, REFRESH_INTERVAL - _valueUs, 0, phaseReference)) {
+    if (startWaveform(_pin, _valueUs, REFRESH_INTERVAL - _valueUs, 0, phaseReference))
+#else
+    if (startWaveform(_pin, _valueUs, REFRESH_INTERVAL - _valueUs, 0))
+#endif
+    {
       _servoMap |= (1 << _pin);
     }
   }

platform.txt

@@ -55,7 +55,7 @@ compiler.libc.path={runtime.platform.path}/tools/sdk/libc/xtensa-lx106-elf
 compiler.cpreprocessor.flags=-D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I{compiler.sdk.path}/include" "-I{compiler.sdk.path}/{build.lwip_include}" "-I{compiler.libc.path}/include" "-I{build.path}/core"
 
 compiler.c.cmd=xtensa-lx106-elf-gcc
-compiler.c.flags=-c {compiler.warning_flags} -std=gnu17 {build.stacksmash_flags} -Os -g -Wpointer-arith -Wno-implicit-function-declaration -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mtext-section-literals -falign-functions=4 -MMD -ffunction-sections -fdata-sections {build.exception_flags} {build.sslflags}
+compiler.c.flags=-c {compiler.warning_flags} -std=gnu17 {build.stacksmash_flags} -Os -g -Wpointer-arith -Wno-implicit-function-declaration -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mtext-section-literals -falign-functions=4 -MMD -ffunction-sections -fdata-sections {build.exception_flags} {build.sslflags} {build.waveform}
 
 compiler.S.cmd=xtensa-lx106-elf-gcc
 compiler.S.flags=-c -g -x assembler-with-cpp -MMD -mlongcalls
@@ -66,7 +66,7 @@ compiler.c.elf.cmd=xtensa-lx106-elf-gcc
 compiler.c.elf.libs=-lhal -lphy -lpp -lnet80211 {build.lwip_lib} -lwpa -lcrypto -lmain -lwps -lbearssl -lespnow -lsmartconfig -lairkiss -lwpa2 {build.stdcpp_lib} -lm -lc -lgcc
 
 compiler.cpp.cmd=xtensa-lx106-elf-g++
-compiler.cpp.flags=-c {compiler.warning_flags} {build.stacksmash_flags} -Os -g -mlongcalls -mtext-section-literals -fno-rtti -falign-functions=4 {build.stdcpp_level} -MMD -ffunction-sections -fdata-sections {build.exception_flags} {build.sslflags}
+compiler.cpp.flags=-c {compiler.warning_flags} {build.stacksmash_flags} -Os -g -mlongcalls -mtext-section-literals -fno-rtti -falign-functions=4 {build.stdcpp_level} -MMD -ffunction-sections -fdata-sections {build.exception_flags} {build.sslflags} {build.waveform}
 
 compiler.as.cmd=xtensa-lx106-elf-as
 

tools/boards.txt.py

@@ -1466,6 +1466,18 @@ def led (name, default, ledList):
                 ]))
     return { name: led }
 
+################################################################
+# Waveform flavour
+
+def waveform ():
+    return { 'waveform': collections.OrderedDict([
+                        ('.menu.waveform.phase', 'Locked Phase'),
+                        ('.menu.waveform.phase.build.waveform', '-DWAVEFORM_LOCKED_PHASE'),
+                        ('.menu.waveform.pwm', 'Locked PWM'),
+                        ('.menu.waveform.pwm.build.waveform', '-DWAVEFORM_LOCKED_PWM'),
+                    ])
+           }
+
 ################################################################
 # sdk selection
 
@@ -1517,6 +1529,7 @@ def all_boards ():
     macros.update(led('led',    led_default, range(0,led_max+1)))
     macros.update(led('led216', 2,           { 16 }))
     macros.update(sdk())
+    macros.update(waveform())
 
     if boardfilteropt or excludeboards:
         print('#')
@@ -1561,6 +1574,7 @@ def all_boards ():
     print('menu.wipe=Erase Flash')
     print('menu.sdk=Espressif FW')
     print('menu.ssl=SSL Support')
+    print('menu.waveform=Waveform Flavour')
     print('')
 
     missingboards = []
@@ -1581,7 +1595,7 @@ def all_boards ():
                 print(id + optname + '=' + board['opts'][optname])
 
         # macros
-        macrolist = [ 'defaults', 'cpufreq_menu', 'vtable_menu', 'exception_menu', 'stacksmash_menu', 'ssl_cipher_menu' ]
+        macrolist = [ 'defaults', 'cpufreq_menu', 'vtable_menu', 'exception_menu', 'stacksmash_menu', 'ssl_cipher_menu', 'waveform' ]
         if 'macro' in board:
             macrolist += board['macro']
         macrolist += [ 'lwip', 'debug_menu', 'flash_erase_menu' ]

tools/platformio-build.py

@@ -237,6 +237,15 @@ def scons_patched_match_splitext(path, suffixes=None):
         LIBS=["lwip2-536-feat"]
     )
 
+#
+# Waveform
+#
+if "PIO_FRAMEWORK_ARDUINO_WAVEFORM_LOCKED_PWM" in flatten_cppdefines:
+    env.Append(CPPDEFINES=[("WAVEFORM_LOCKED_PWM", 1)])
+# PIO_FRAMEWORK_ARDUINO_WAVEFORM_LOCKED_PHASE (defaults)
+else:
+    env.Append(CPPDEFINES=[("WAVEFORM_LOCKED_PHASE", 1)])
+
 #
 # VTables
 #