runtime update

runtime/src/vx_print.c

@@ -4,28 +4,37 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <stdio.h>
+#include <math.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-struct printf_arg_t {
+typedef struct {
 	const char* format;
-	va_list     va;
+	va_list*    va;
 	int         ret;
-};
+} printf_arg_t;
 
-static void __printf_callback(int task_id, void* arg) {
-	struct printf_arg_t* p_arg = (struct printf_arg_t*)(arg);
-	p_arg->ret = vprintf(p_arg->format, p_arg->va);
+typedef struct {
+	int value;
+	int base;
+} putint_arg_t;
+
+typedef struct {
+	float value;
+	int precision;
+} putfloat_arg_t;
+
+static void __printf_cb(printf_arg_t* arg) {
+	arg->ret = vprintf(arg->format, *arg->va);
 }
 
 int vx_vprintf(const char* format, va_list va) {
-	// need to execute 'vprintf' single-threaded due to potential thread-data dependency
-	struct printf_arg_t arg;
+	printf_arg_t arg;
 	arg.format = format;
-	arg.va     = va;
-	vx_serial(__printf_callback, &arg);		
+	arg.va = &va;
+	vx_serial(__printf_cb, &arg);
   	return arg.ret;
 }
 
@@ -38,6 +47,45 @@ int vx_printf(const char * format, ...) {
   	return ret;
 }
 
+static void __putint_cb(const putint_arg_t* arg) {
+	char tmp[33];
+	float value = arg->value;
+	int base = arg->base;
+	itoa(value, tmp, base);
+	for (int i = 0; i < 33; ++i) {
+		int c = tmp[i];
+		if (!c) break;
+		vx_putchar(c);
+	}
+}
+
+void vx_putint(int value, int base) {
+	putint_arg_t arg;
+	arg.value = value;
+	arg.base = base;
+	vx_serial(__putint_cb, &arg);
+}
+
+static void __putfloat_cb(const putfloat_arg_t* arg) {
+	float value = arg->value;
+	int precision = arg->precision;
+	int ipart = (int)value;
+    vx_putint(ipart, 10);
+    if (precision != 0) {
+        vx_putchar('.');
+		float frac = value - (float)ipart;
+        float fscaled = frac * pow(10, precision);  
+        vx_putint((int)fscaled, 10);
+    }
+}
+
+void vx_putfloat(float value, int precision) {
+	putfloat_arg_t arg;
+	arg.value = value;
+	arg.precision = precision;
+	vx_serial(__putfloat_cb, &arg);
+}
+
 #ifdef __cplusplus
 }
 #endif