DM: some I2S stuff

Author: deanm1278

boards.txt

@@ -239,7 +239,7 @@ adafruit_metro_m4.build.usb_product="Adafruit Metro M4"
 adafruit_metro_m4.build.usb_manufacturer="Adafruit LLC"
 adafruit_metro_m4.build.board=METRO_M4
 adafruit_metro_m4.build.core=arduino
-adafruit_metro_m4.build.extra_flags=-D__SAMD51J19A__ -D__SAMD51__ {build.usb_flags} -DARM_MATH_CM4
+adafruit_metro_m4.build.extra_flags=-D__SAMD51J19A__ -D__SAMD51__ -DDEBUG {build.usb_flags} -D__FPU_PRESENT -DARM_MATH_CM4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
 adafruit_metro_m4.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
 adafruit_metro_m4.build.openocdscript=openocd_scripts/arduino_zero.cfg
 adafruit_metro_m4.build.variant=metro_m4
@@ -248,9 +248,6 @@ adafruit_metro_m4.build.vid=0x239A
 adafruit_metro_m4.build.pid=0x8020
 adafruit_metro_m4.bootloader.tool=openocd
 adafruit_metro_m4.bootloader.file=metroM4/METRO_M4_sam_ba.bin
-adafruit_metro_m4.compiler.c.elf.extra_flags=-mfloat-abi=hard -mfpu=fpv4-sp-d16
-adafruit_metro_m4.compiler.c.extra_flags=-mfloat-abi=hard -mfpu=fpv4-sp-d16
-adafruit_metro_m4.compiler.cpp.extra_flags=-mfloat-abi=hard -mfpu=fpv4-sp-d16
 adafruit_metro_m4.compiler.arm.cmsis.ldflags="-L{build.variant.path}" -larm_cortexM4lf_math
 
 # Adafruit Feather M4 (SAMD51)

cores/arduino/WVariant.h

@@ -226,8 +226,19 @@ typedef enum _EPioType
   PIO_SERCOM_ALT,       /* The pin is controlled by the associated signal of peripheral D. */
   PIO_TIMER,            /* The pin is controlled by the associated signal of peripheral E. */
   PIO_TIMER_ALT,        /* The pin is controlled by the associated signal of peripheral F. */
+#if defined(__SAMD51__)
+  PIO_TCC_PDEC,			/* The pin is controlled by the associated signal of peripheral G. */
+  PIO_COM,             /* The pin is controlled by the associated signal of peripheral H. */
+  PIO_SDHC,             /* The pin is controlled by the associated signal of peripheral I. */
+  PIO_I2S,              /* The pin is controlled by the associated signal of peripheral J. */
+  PIO_PCC,              /* The pin is controlled by the associated signal of peripheral K. */
+  PIO_GMAC,             /* The pin is controlled by the associated signal of peripheral L. */
+  PIO_AC_CLK,           /* The pin is controlled by the associated signal of peripheral M. */
+  PIO_CCL,              /* The pin is controlled by the associated signal of peripheral N. */
+#else
   PIO_COM,              /* The pin is controlled by the associated signal of peripheral G. */
   PIO_AC_CLK,           /* The pin is controlled by the associated signal of peripheral H. */
+#endif
   PIO_DIGITAL,          /* The pin is controlled by PORT. */
   PIO_INPUT,            /* The pin is controlled by PORT and is an input. */
   PIO_INPUT_PULLUP,     /* The pin is controlled by PORT and is an input with internal pull-up resistor enabled. */

cores/arduino/wiring_private.c

@@ -67,8 +67,19 @@ int pinPeripheral( uint32_t ulPin, EPioType ulPeripheral )
     case PIO_TIMER:
     case PIO_TIMER_ALT:
     case PIO_EXTINT:
+#if defined(__SAMD51__)
+    case PIO_TCC_PDEC:
     case PIO_COM:
+    case PIO_SDHC:
+    case PIO_I2S:
+    case PIO_PCC:
+    case PIO_GMAC:
     case PIO_AC_CLK:
+    case PIO_CCL:
+#else
+    case PIO_COM:
+    case PIO_AC_CLK:
+#endif
 #if 0
       // Is the pio pin in the lower 16 ones?
       // The WRCONFIG register allows update of only 16 pin max out of 32

platform.txt

@@ -33,13 +33,13 @@ compiler.warning_flags.all=-Wall -Wextra
 
 compiler.path={runtime.tools.arm-none-eabi-gcc.path}/bin/
 compiler.c.cmd=arm-none-eabi-gcc
-compiler.c.flags=-mcpu={build.mcu} -mthumb -c -g -Os {compiler.warning_flags} -std=gnu11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -MMD 
+compiler.c.flags=-mcpu={build.mcu} -mthumb -c -g3 -Os {compiler.warning_flags} -std=gnu11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -MMD 
 compiler.c.elf.cmd=arm-none-eabi-gcc
 compiler.c.elf.flags=-Os -Wl,--gc-sections -save-temps
 compiler.S.cmd=arm-none-eabi-gcc
-compiler.S.flags=-c -g -x assembler-with-cpp
+compiler.S.flags=-c -g3 -x assembler-with-cpp -MMD
 compiler.cpp.cmd=arm-none-eabi-g++
-compiler.cpp.flags=-mcpu={build.mcu} -mthumb -c -g -Os {compiler.warning_flags} -std=gnu++11 -ffunction-sections -fdata-sections -fno-threadsafe-statics -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -MMD
+compiler.cpp.flags=-mcpu={build.mcu} -mthumb -c -g3 -Os {compiler.warning_flags} -std=gnu++11 -ffunction-sections -fdata-sections -fno-threadsafe-statics -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -MMD
 compiler.ar.cmd=arm-none-eabi-ar
 compiler.ar.flags=rcs
 compiler.objcopy.cmd=arm-none-eabi-objcopy

variants/metro_m4/linker_scripts/gcc/flash_without_bootloader.ld

@@ -25,8 +25,8 @@
  */
 MEMORY
 {
-  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00100000
-  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00040000
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x80000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x30000
 }
 
 /* Linker script to place sections and symbol values. Should be used together
@@ -68,6 +68,7 @@ SECTIONS
 	{
 		__text_start__ = .;
 
+		. = ALIGN(4);
 		KEEP(*(.isr_vector))
 		*(.text*)
 

variants/metro_m4/variant.h

@@ -32,6 +32,10 @@
 /** Master clock frequency */
 #define VARIANT_MCK			  (120000000ul)
 
+#define VARIANT_GCLK0_FREQ (120000000UL)
+#define VARIANT_GCLK1_FREQ (48000000UL)
+#define VARIANT_GCLK2_FREQ (100000000UL)
+
 /*----------------------------------------------------------------------------
  *        Headers
  *----------------------------------------------------------------------------*/
@@ -190,9 +194,11 @@ static const uint8_t SCL = PIN_WIRE_SCL;
 #define I2S_CLOCK_GENERATOR 3
 
 //TODO: these
-#define PIN_I2S_SD          (13u)
+#define PIN_I2S_SDO          (13u)
+#define PIN_I2S_SDI          (1u)
 #define PIN_I2S_SCK         (3u)
 #define PIN_I2S_FS          (12u)
+#define PIN_I2S_MCK			(2u)
 
 #ifdef __cplusplus
 }