Add mit-mic board

Author: bitsk

boards.txt

@@ -98,6 +98,52 @@ bit.upload.maximum_size=8388608
 bit.build.ldscript={runtime.platform.path}/cores/arduino/kendryte-standalone-sdk/lds/kendryte.ld
 
 
+##################################################
+############# Sipeed Maix Bit with Mic Board ###############
+
+bitm.name=Sipeed Maix Bit-Mic Board
+
+## Toolchain
+bitm.menu.toolsloc.default=Default
+bitm.menu.toolsloc.default.compiler.path={runtime.tools.riscv64-unknown-elf-gcc.path}/bin/
+
+## CPU Clock
+bitm.menu.clksrc.400=400MHz CPU Clock Frequency
+bitm.menu.clksrc.500=500MHz CPU Clock Frequency
+bitm.menu.clksrc.600=600MHz CPU Clock Frequency
+bitm.menu.clksrc.400.build.f_cpu=400000000L
+bitm.menu.clksrc.500.build.f_cpu=500000000L
+bitm.menu.clksrc.600.build.f_cpu=600000000L
+
+## Burn baud rate
+bitm.menu.burn_baudrate.1500000=1.5 Mbps
+bitm.menu.burn_baudrate.1000000=1 Mbps
+bitm.menu.burn_baudrate.1500000.build.burn_baudrate=1500000
+bitm.menu.burn_baudrate.1000000.build.burn_baudrate=1000000
+
+## Burn tool firmware
+bitm.menu.burn_tool_firmware.bitm=Default
+bitm.menu.burn_tool_firmware.bitm.build.burn_tool_firmware=bit-mic
+
+## Point to the file for ./variants/<variant>/pins_arduino.h
+bitm.build.variant=sipeed_maix_bit_mic
+
+## "The 'core' file directory for this board, in ./cores
+bitm.build.core=arduino
+
+## This sets a define for use in the compiled code.
+bitm.build.board=BOARD_SIPEED_MAIX_BIT
+bitm.build.sdata.size=512
+
+## This selects the tool from "programmers.txt"
+bitm.upload.tool=kflash
+
+## Limit is the 16MB Flash. Assume half is used for something else.
+bitm.upload.maximum_size=8388608
+bitm.build.ldscript={runtime.platform.path}/cores/arduino/kendryte-standalone-sdk/lds/kendryte.ld
+
+
+
 ####################################################
 ############### Sipeed Maix Go Board ###############
 
@@ -171,8 +217,8 @@ mduino.menu.burn_baudrate.1500000.build.burn_baudrate=1500000
 mduino.menu.burn_baudrate.1000000.build.burn_baudrate=1000000
 
 ## Burn tool firmware
-mduino.menu.burn_tool_firmware.dan=Default
-mduino.menu.burn_tool_firmware.dan.build.burn_tool_firmware=maixduino
+mduino.menu.burn_tool_firmware.mduino=Default
+mduino.menu.burn_tool_firmware.mduino.build.burn_tool_firmware=maixduino
 
 ## Point to the file for ./variants/<variant>/pins_arduino.h
 mduino.build.variant=sipeed_maixduino

variants/sipeed_maix_bit_mic/pins_arduino.h

@@ -0,0 +1,84 @@
+#ifndef _VARIANT_SIPEED_MAIX_BIT_MIC
+#define _VARIANT_SIPEED_MAIX_BIT_MIC
+
+#include <stdint.h>
+
+#define RISCV
+#include "platform.h"
+
+#include "Arduino.h"
+#include "pwm.h"
+
+#ifdef __cplusplus
+#include "UARTClass.h"
+extern class UARTHSClass Serial;
+extern class UARTClass Serial1;
+extern class UARTClass Serial2;
+extern class UARTClass Serial3;
+#endif
+
+/* BOARD  PIN DEFINE */
+/* LEDs */
+#define PIN_LED_GREEN        13
+#define PIN_LED_BLUE         12
+#define PIN_LED_RED          14
+#define PIN_LED              13
+#define LED_BUILTIN          13
+#define LED_GREEN            13
+#define LED_BLUE             12
+#define LED_RED              14
+/* KEY */
+#define KEY0                 16
+/* MIC ARRAY */
+#define MIC_BCK              18
+#define MIC_WS               19
+#define MIC_DAT3             20
+#define MIC_DAT2             21
+#define MIC_DAT1             22
+#define MIC_DAT0             23
+#define MIC_LED_DAT          24
+/* SPI0 */
+#define SPI0_CS1             25
+#define SPI0_MISO            26
+#define SPI0_SCLK            27
+#define SPI0_MOSI            28
+#define SPI0_CS0             29
+/* LCD */
+#define LCD_CS               36
+#define LCD_RST              37
+#define LCD_DC               38
+#define LCD_WR               39
+
+#define RX0                   4
+#define TX0                   5
+
+#define RX1                   6
+#define TX1                   7
+
+#define SDA                  31
+#define SCL                  30
+
+#define MD_PIN_MAP(fpio)   (fpio)
+#define ORG_PIN_MAP(org_pin)    (org_pin)
+
+static const uint8_t SS   = SPI0_CS0 ;
+static const uint8_t MOSI = SPI0_MOSI;
+static const uint8_t MISO = SPI0_MISO;
+static const uint8_t SCK  = SPI0_SCLK;
+
+typedef struct _pwm_fpio_set_t{
+    pwm_channel_number_t channel;
+    pwm_device_number_t device;
+    uint8_t inuse;
+}pwm_fpio_set_t;
+
+
+
+#define VARIANT_NUM_GPIOHS (32)
+#define VARIANT_NUM_GPIO   ( 8)
+#define VARIANT_NUM_PWM    (12)
+#define VARIANT_NUM_I2C    ( 3)
+#define VARIANT_NUM_SPI    ( 3)
+#define VARIANT_NUM_UART   ( 3)
+
+#endif