Initial esp-lisp as it was 2015-09-22 19:19

- initial datatypes: string, atom, cons, int, prim
- primitive function apply - slow but generic
- lisp reader
- princ writer, terpri
- a version of lisp eval that only calls a primitive function
- some tests for reader/writer and primitive call
- ./run to compile and run on desktop and to compile for esp, run make flash to flush
- ./mcu to connect to chip

Makefile

@@ -0,0 +1,4 @@
+# Simple makefile for eps-lisp
+PROGRAM=*.c
+include ../esp-open-rtos/common.mk
+

add-path

@@ -0,0 +1 @@
+source ../path-add-esp

esplisp.c

@@ -0,0 +1,59 @@
+/* 2015-09-22 (C) Jonas S Karlsson, jsk@yesco.org */
+/* "driver" for esp-open-rtos put in examples/lisp */
+
+#include "espressif/esp_common.h"
+#include "espressif/sdk_private.h"
+#include "FreeRTOS.h"
+#include "task.h"
+#include "queue.h"
+
+#include <string.h>
+
+#include "lisp.h"
+
+void task1(void *pvParameters)
+{
+    xQueueHandle *queue = (xQueueHandle *)pvParameters;
+    printf("Hello from task1!\r\n");
+    uint32_t count = 0;
+    while(1) {
+        vTaskDelay(300); // 3s
+
+        unsigned int mem = xPortGetFreeHeapSize();
+        printf("free=%u\r\n", mem);
+        lisptest();
+        printf("free=%u USED=%u\r\n", xPortGetFreeHeapSize(), (unsigned int)(mem-xPortGetFreeHeapSize()));
+
+        xQueueSend(*queue, &count, 0);
+        count++;
+    }
+}
+
+void task2(void *pvParameters)
+{
+    printf("Hello from task 2!\r\n");
+    xQueueHandle *queue = (xQueueHandle *)pvParameters;
+    while(1) {
+        uint32_t count;
+        if(xQueueReceive(*queue, &count, 1000)) {
+            //printf("Got %u\n", count);
+            putchar('.');
+        } else {
+            printf("No msg :(\n");
+        }
+    }
+}
+
+static xQueueHandle mainqueue;
+
+void user_init(void)
+{
+    sdk_uart_div_modify(0, UART_CLK_FREQ / 115200);
+    printf("SDK version:%s\n", sdk_system_get_sdk_version());
+
+    lispinit();
+
+    mainqueue = xQueueCreate(10, sizeof(uint32_t));
+    xTaskCreate(task1, (signed char *)"tsk1", 256, &mainqueue, 2, NULL);
+    xTaskCreate(task2, (signed char *)"tsk2", 256, &mainqueue, 2, NULL);
+}