Added CREATino library for ESP32 devices

examples/RISCV-32-arduino/example1.s

@@ -0,0 +1,60 @@
+
+.data
+    time:
+        .word 1000
+.text
+
+main:
+    addi sp, sp, -4       
+    sw ra, 0(sp)          
+    jal ra, initArduino    
+    jal ra, setup
+    lw ra, 0(sp)          
+    addi sp, sp, 4              
+    j loop
+
+setup:
+    #pinMode(LED_BUILTIN, OUTPUT);
+    li a0,30
+    li a1,  0x03
+    addi sp, sp, -4       
+    sw ra, 0(sp)  
+    jal ra, pinMode
+    lw ra, 0(sp)          
+    addi sp, sp, 4
+    jr ra
+loop:
+    #digitalWrite(LED_BUILTIN, HIGH);
+    li a0,30 
+    li a1, 0x1
+    addi sp, sp, -4       
+    sw ra, 0(sp)
+    jal ra, digitalWrite
+    lw ra, 0(sp)          
+    addi sp, sp, 4
+    #delay(1000);
+    la a0, time
+    lw a0, 0(a0)
+    addi sp, sp, -4      
+    sw ra, 0(sp)
+    jal ra, delay
+    lw ra, 0(sp)          
+    addi sp, sp, 4 
+    #digitalWrite(LED_BUILTIN, LOW);
+    li a0,30 
+    li a1, 0x0
+    addi sp, sp, -4       
+    sw ra, 0(sp)
+    jal ra, digitalWrite
+    lw ra, 0(sp)          
+    addi sp, sp, 4 
+    #delay(1000);
+    la a0, time
+    lw a0, 0(a0)
+    addi sp, sp, -4      
+    sw ra, 0(sp)
+    jal ra, delay
+    lw ra, 0(sp)          
+    addi sp, sp, 4 
+    j loop
+

examples/RISCV-32-arduino/example10.s

@@ -0,0 +1,91 @@
+# Creatino example: Looking up serial entries with serial_find
+.data 
+    msg: .string "Terminal iniciado en baudrate 115200"
+    missing: .string "\nNot here"
+        .align 2
+    wanted: .string "OK"
+    stop: .string "STOP"
+    found: .string "\nOK found"
+    	.align 2
+    buffer: .space 100
+
+.text
+not_found:
+    la a0, missing
+    addi sp, sp, -4       
+    sw ra, 0(sp)          
+    jal ra, serial_printf
+    lw ra, 0(sp)          
+    addi sp, sp, 4 
+
+    #li a0, 10000
+    #addi sp, sp, -4     
+    #sw ra, 0(sp)
+    #jal ra, delay
+    #lw ra, 0(sp)          
+    #addi sp, sp, 4
+
+    jal ra, loop
+
+founded:
+    la a0, found
+    addi sp, sp, -4       
+    sw ra, 0(sp)          
+    jal ra, serial_printf
+    lw ra, 0(sp)          
+    addi sp, sp, 4 
+
+    #li a0, 10000
+    #addi sp, sp, -4     
+    #sw ra, 0(sp)
+    #jal ra, delay
+    #lw ra, 0(sp)          
+    #addi sp, sp, 4
+
+    jal ra, loop
+
+
+setup:
+    # Serial.begin(115200)
+    li a0, 115200
+    addi sp, sp, -4      
+    sw ra, 0(sp)   
+    jal ra, serial_begin
+    lw ra, 0(sp)         
+    addi sp, sp, 4       
+
+    # Serial.printf(msg)
+    la a0, msg   
+    addi sp, sp, -4       
+    sw ra, 0(sp)          
+    jal ra, serial_printf
+    lw ra, 0(sp)          
+    addi sp, sp, 4       
+
+    jr ra   
+
+loop:
+    # Search "OK" in terminal
+    la a0, wanted
+    la a1, stop
+    addi sp, sp, -4      
+    sw ra, 0(sp)   
+    jal ra, serial_findUntil 
+    lw ra, 0(sp)          
+    addi sp, sp, 4       
+
+    beqz a0, not_found
+    jal ra, founded
+
+
+
+    j loop
+
+main:          
+    jal ra, initArduino
+    addi sp, sp, -4       
+    sw ra, 0(sp)
+    jal ra, setup
+    lw ra, 0(sp)
+    addi sp, sp, 4
+    j loop

examples/RISCV-32-arduino/example11.s

@@ -0,0 +1,24 @@
+# Creatino Example: Starting Monitor Print
+.data
+	msg: .string "Hello! Serial here"
+
+    	msg2: .string "Come soon!!"
+.text
+	main:
+        # ESP-IDF needs to initiate Arduino component first
+        jal ra, initArduino
+        # Baud rate depends on the board you are using. Maybe the same values don't fit everywhere
+        li a0, 115200
+        jal ra, serial_begin
+        la a0, msg    
+        jal ra, serial_printf
+
+        #Now, we will wait all the data is transmitted
+        jal ra, serial_flush
+
+        #Print again!!
+        la a0, msg2    
+        jal ra, serial_printf
+
+
+        jr ra

examples/RISCV-32-arduino/example2.s

@@ -0,0 +1,102 @@
+
+.data
+    time:  .word 1000
+    buttonPin: .word  21
+    ledpin: .word 5
+    buttonState:    .word   0
+    msg:    .string     "Button Pressed!"
+
+.text
+setup:
+    li a0, 115200
+    addi sp, sp, -4      
+    sw ra, 0(sp)          
+    jal ra, serial_begin
+    lw ra, 0(sp)          
+    addi sp, sp, 4            
+
+    #pinMode(buttonPin,INPUT_PULLUP)
+    la a0, buttonPin   
+    lw a0, 0(a0)       
+    li a1,  0x05 #INPUT_PULLUP
+    addi sp, sp, -4      
+    sw ra, 0(sp)   
+    jal ra, pinMode
+    lw ra, 0(sp)          
+    addi sp, sp, 4
+
+    #pinMode(ledpin,OUTPUT)
+    la a0, ledpin
+    lw a0, 0(a0)       
+    li a1,  0x03 #OUTPUT
+    addi sp, sp, -4      
+    sw ra, 0(sp)   
+    jal ra, pinMode
+    lw ra, 0(sp)          
+    addi sp, sp, 4
+
+    jr ra
+
+button_pressed:
+    la a0, msg
+    addi sp, sp, -16       
+    sw ra, 12(sp)          
+    jal ra, serial_printf
+    lw ra, 12(sp)          
+    addi sp, sp, 16       
+
+    la a0, ledpin
+    lw a0, 0(a0)
+    li a1, 0x1
+    jal ra, digitalWrite
+
+    la a0, time
+    lw a0, 0(a0)
+    addi sp, sp, -16      
+    sw ra, 12(sp)
+    jal ra, delay
+    lw ra, 12(sp)          
+    addi sp, sp, 16 
+
+    jal ra, loop
+
+
+loop:
+    la a0, buttonPin   
+    lw a0, 0(a0)       
+    addi sp, sp, -4      
+    sw ra, 0(sp)          
+    jal ra, digitalRead
+    lw ra, 0(sp)          
+    addi sp, sp, 4
+
+    mv t0,a0
+
+    li t1 ,0 #LOW
+
+    beq t0,t1,button_pressed
+
+    la a0, ledpin
+    lw a0, 0(a0)
+    li a1, 0x0
+    jal ra, digitalWrite
+
+    la a0, time
+    lw a0, 0(a0)
+    addi sp, sp, -16      
+    sw ra, 12(sp)
+    jal ra, delay
+    lw ra, 12(sp)          
+    addi sp, sp, 16 
+
+    j loop
+
+main:
+    addi sp, sp, -16       
+    sw ra, 12(sp)          
+    jal ra, initArduino    
+    jal ra, setup
+    lw ra, 12(sp)          
+    addi sp, sp, 16 
+    j loop
+    jr ra

examples/RISCV-32-arduino/example3.s

@@ -0,0 +1,96 @@
+
+.data
+    space:   .zero 100 #Buffer to place the string
+    initial: .string "Introduce number of letters:\n"
+    aux: .string "%d\nType your message\n"
+    print:  .string "Your message: %s\n"
+
+.text
+
+setup:
+#serialBegin
+    li a0,115200 
+    addi sp, sp, -4      
+    sw ra, 0(sp)     
+    jal ra, serial_begin
+    lw ra, 0(sp)     
+    addi sp, sp,4
+    jr ra
+
+print_int:
+	la a0, aux
+    mv a1,t0
+    addi sp, sp, -4       
+    sw ra, 0(sp)          
+    jal ra, serial_printf
+    lw ra, 0(sp)          
+    addi sp, sp, 4
+    j read_function
+
+
+read_function:    
+    la a0, space
+    mv a1, t0 # number of letters it will have
+    addi sp, sp, -4      
+    sw ra, 0(sp)   
+    jal ra, serial_readBytes
+    lw ra, 0(sp)     
+    addi sp, sp,4 
+
+    bne t0,a0,read_function
+
+
+    la a0, print
+    la a1, space
+    addi sp, sp, -4       
+    sw ra, 0(sp)          
+    jal ra, serial_printf
+    lw ra, 0(sp)          
+    addi sp, sp, 4
+
+    jr ra
+
+
+aux_print:
+	#serialPrintf 
+    la a0,initial
+    addi sp, sp, -4       
+    sw ra, 0(sp)          
+    jal ra, serial_printf
+    lw ra, 0(sp)          
+    addi sp, sp, 4
+    j read_num
+
+
+read_num:    
+    addi sp, sp, -4      
+    sw ra, 0(sp)     
+    jal ra, serial_parseInt
+    lw ra, 0(sp)     
+    addi sp, sp,4 
+
+    mv t0, a0
+
+
+    bnez t0, print_int
+    j read_num
+
+loop:
+	addi sp, sp, -4       
+    sw ra, 0(sp)          
+    jal ra, serial_available
+    lw ra, 0(sp)          
+    addi sp, sp, 4
+    beqz a0,aux_print
+    j loop  
+
+
+
+main:
+    addi sp, sp, -4       
+    sw ra, 0(sp)          
+    jal ra, initArduino    
+    jal ra, setup
+    lw ra, 0(sp)          
+    addi sp, sp, 4              
+    j loop