mirror of
https://github.com/ringtailsoftware/uvm32.git
synced 2026-06-05 22:43:39 +00:00
6d12ce5a80
Tested on Arduino Uno (ATMega328P)
Sketch uses 9950 bytes (30%) of program storage space. Maximum is 32256 bytes.
Global variables use 1254 bytes (61%) of dynamic memory, leaving 794 bytes for local variables. Maximum is 2048 bytes.
102 lines
3.7 KiB
C++
102 lines
3.7 KiB
C++
#include "config.h"
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#include "uvm32.h"
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#include "common/uvm32_common_custom.h"
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// Precompiled binary program to print integers
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// This code expects to print via CSR 0x13C (IOREQ_PRINTD in common/uvm32_common_custom.h)
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uint8_t rom[] = {
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0x23, 0x26, 0x11, 0x00, 0xef, 0x00, 0x80, 0x00, 0x73, 0x50, 0x80, 0x13,
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0x37, 0xf6, 0xff, 0xff, 0xb7, 0x17, 0x00, 0x00, 0x37, 0xe7, 0xff, 0xff,
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0x13, 0x05, 0xf0, 0x01, 0xb7, 0x45, 0x00, 0x00, 0x13, 0x06, 0xd6, 0xcc,
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0x93, 0x86, 0x37, 0x33, 0x13, 0x07, 0x77, 0xe6, 0x93, 0x87, 0x37, 0xb3,
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0x13, 0x08, 0xa0, 0x00, 0x63, 0xcc, 0xc6, 0x06, 0x93, 0x08, 0x07, 0x00,
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0x63, 0xc2, 0xe7, 0x06, 0x93, 0x03, 0x00, 0x00, 0x13, 0x03, 0x00, 0x00,
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0x13, 0x0e, 0x00, 0x00, 0x93, 0x0e, 0x00, 0x00, 0x93, 0x02, 0x00, 0x02,
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0x13, 0x8f, 0x02, 0xfe, 0x63, 0x6e, 0xe5, 0x03, 0x33, 0x0f, 0x73, 0x00,
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0x63, 0xea, 0xe5, 0x03, 0x33, 0x8e, 0xce, 0x03, 0xb3, 0x0e, 0x73, 0x40,
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0x73, 0x50, 0x90, 0x13, 0x13, 0x5e, 0xbe, 0x40, 0xb3, 0x8e, 0x1e, 0x01,
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0x33, 0x0e, 0xce, 0x00, 0x33, 0x83, 0xde, 0x03, 0x13, 0x53, 0xc3, 0x00,
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0xb3, 0x03, 0xce, 0x03, 0x93, 0xd3, 0xc3, 0x00, 0x93, 0x82, 0x12, 0x00,
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0x6f, 0xf0, 0x5f, 0xfc, 0x73, 0x90, 0x02, 0x14, 0x93, 0x88, 0x18, 0x09,
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0xe3, 0xd2, 0x17, 0xfb, 0x73, 0x10, 0x08, 0x14, 0x13, 0x06, 0x96, 0x19,
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0xe3, 0xd8, 0xc6, 0xf8, 0x37, 0x05, 0x00, 0x80, 0x13, 0x05, 0x05, 0x0c,
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0x73, 0x10, 0xb5, 0x13, 0x67, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x00
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};
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// Create an identifier for our host handler
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typedef enum {
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F_PRINTD,
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F_PRINTLN,
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F_PRINTC,
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} f_code_t;
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// Map VM ioreq IOREQ_PRINTD (0x13C) to F_PRINTD, tell VM to expect write of a U32
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const uvm32_mapping_t env[] = {
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{ IOREQ_PRINTD, F_PRINTD, IOREQ_TYP_U32_WR },
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{ IOREQ_PRINTC, F_PRINTC, IOREQ_TYP_U32_WR },
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{ IOREQ_PRINTLN, F_PRINTLN, IOREQ_TYP_BUF_TERMINATED_WR },
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};
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uvm32_state_t vmst;
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uvm32_evt_t evt;
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bool isrunning = false;
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uint32_t led_time = 0;
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bool led_state = false;
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void setup(void) {
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Serial.begin(115200);
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pinMode(LED_BUILTIN, OUTPUT);
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isrunning = false;
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}
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void loop(void) {
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// flash LED rapidly to show main loop is still running
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if (millis() > led_time + 50) {
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digitalWrite(LED_BUILTIN, led_state);
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led_state = !led_state;
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led_time = millis();
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}
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if (isrunning) {
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uvm32_run(&vmst, &evt, 100); // num instructions before vm considered hung
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switch(evt.typ) {
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case UVM32_EVT_END:
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isrunning = false;
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break;
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case UVM32_EVT_IOREQ: // vm has paused to handle IOREQ
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switch((f_code_t)evt.data.ioreq.code) {
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case F_PRINTD:
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Serial.println(evt.data.ioreq.val.u32);
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break;
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case F_PRINTC:
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Serial.print((char)evt.data.ioreq.val.u32);
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break;
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case F_PRINTLN:
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for (int i=0;i<evt.data.ioreq.val.buf.len;i++) {
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Serial.print((char)evt.data.ioreq.val.buf.ptr[i]);
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}
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Serial.println("");
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break;
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}
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break;
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case UVM32_EVT_ERR:
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Serial.print("Error: ");
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Serial.println(evt.data.err.errstr);
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isrunning = false;
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break;
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case UVM32_EVT_YIELD:
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break;
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}
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} else {
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Serial.println("Starting VM");
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// setup vm
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uvm32_init(&vmst, env, sizeof(env) / sizeof(env[0]));
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uvm32_load(&vmst, rom, sizeof(rom));
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isrunning = true;
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delay(2000);
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}
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return 0;
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}
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