１．Ichogo Jam 1.0.0がFacebookにあがったのでアップデート。3Kの壁が4Kになった！
２．ビデオ出力でPACMANを移植しているサイトでソースコードが公開されていた。開発環境はLPCXpressoとのこと。
http://blog.goo.ne.jp/usada109/e/6d3e7cc13a5ac071d6bf3f294271dc34
３．豊四季タイニーBASICをmbedに移植しているサイトを参考にLPCXpressoにも移植してみた。
http://blog.goo.ne.jp/roboz80/e/b4ab8db9c3d6495d370706c28d963a40
- 豊四季タイニーBASICのソースをダウンロードする。PIC24F版を使う。
- LPCXpressoで新規プロジェクトを作成する。作成したプロジェクトに、空のファイル"ttbasic.c"を作る。
- 豊四季タイニーBASICのソースをLPCXpressoに持ってくる。必要なファイルは、"ttbasic.c"。
LPC1114FN28/102を使う場合、IRCを使うことが多いと思いますので、IRCをクロックソースにする設定方法を書きます。
http://akizukidenshi.com/download/ds/nxp/LPC1114FN28%E8%AA%AC%E6%98%8E%E6%9B%B8.pdf
system_LPC11xx.c
（省略） /// #define SYSPLLCLKSEL_Val 0x00000001 #define SYSPLLCLKSEL_Val 0x00000000 （省略）
シリアルコンソールには以下のソースコードを移植しました。通信速度はIchigo Jamにあわせて115200ですがローカルエコーはOFFです。
http://www.eleki-jack.com/arm/2010/11/lpcxpresso-uart-8.html
main.c
/* TOYOSHIKI TinyBASIC V1.0 Reference source (C)2012 Tetsuya Suzuki, All rights reserved. */ void basic(void); int main(void) { basic(); return 0 ; }
ttbasic.c
/* TOYOSHIKI TinyBASIC V1.0 Reference source (C)2012 Tetsuya Suzuki, All rights reserved. */ // Compiler requires description #include <stdlib.h> /// #include "sci.h" #ifdef __USE_CMSIS #include "LPC11xx.h" #endif // Flag mask for UART_LSR register. const uint32_t LSR_THRE = 0x20; const uint32_t LSR_RDR = 0x01; // Initialize UART module with specified baud-rate void uart_init(uint32_t baudrate) { // Divisor ratio uint32_t Fdiv; // Configure P1[7] as TXD output. LPC_IOCON->PIO1_7 &= ~0x07; // FUNC=000 (GPIO) LPC_IOCON->PIO1_7 |= 0x01; // FUNC=001 (TXD) // Configure P1[6] as RXD input. LPC_IOCON->PIO1_6 &= ~0x07; // FUNC=000 (GPIO) LPC_IOCON->PIO1_6 |= 0x01; // FUNC=001 (RXD) // Enable UART clock LPC_SYSCON->SYSAHBCLKCTRL |= (1<<12); // UART=1 // Enable UART peripheral clock LPC_SYSCON->UARTCLKDIV = 0x01; // DIV=1 // Calculate baud rate divisor Fdiv = ( SystemCoreClock // System clock frequency * LPC_SYSCON->SYSAHBCLKDIV // AHB clock divider ) / ( LPC_SYSCON->UARTCLKDIV // UART clock divider * 16 * baudrate // baud rate clock ); // Set the baud rate divisor value LPC_UART->LCR |= 0x80; LPC_UART->DLM = Fdiv / 256; LPC_UART->DLL = Fdiv % 256; LPC_UART->LCR &= ~0x80; // Configure UART module as // 8 bit, 1 stop bit, no parity // Enable and reset TX and RX FIFO. LPC_UART->LCR = 0x03; LPC_UART->FCR = 0x07; } // send a character via TXD void uart_putc(const char c) { // Wait for TX buffer empty while (!(LPC_UART->LSR & LSR_THRE)); // Put a character LPC_UART->THR = c; } // receive a character via RXD int uart_getc(void) { // Wait for RX buffer valid while (!(LPC_UART->LSR & LSR_RDR)); return LPC_UART->RBR; } // receive a character via RXD int uart_readable(void) { // Wait for RX buffer valid return ((LPC_UART->LSR & LSR_RDR)); } // Depending on device functions // TO-DO Rewrite these functions to fit your machine // And see 'getrnd()' ///void c_putch(char c){putch2(c);} ///char c_getch(){return getch2();} ///char c_kbhit(){return(kbhit2());} void c_putch(char c){uart_putc(c);} char c_getch(){return uart_getc();} char c_kbhit(){return uart_readable();} void newline(void){ c_putch(13); //CR c_putch(10); //LF } // TOYOSHIKI TinyBASIC symbols // TO-DO Rewrite defined values to fit your machine as needed #define SIZE_LINE 64 //Command line buffer length + NULL #define SIZE_IBUF 64 //i-code conversion buffer size #define SIZE_LIST 1024 //List buffer size #define SIZE_ARRY 32 //Array area size #define SIZE_GSTK 6 //GOSUB stack size(2/nest) #define SIZE_LSTK 15 //FOR stack size(5/nest) // RAM mapping char lbuf[SIZE_LINE]; //Command line buffer unsigned char ibuf[SIZE_IBUF]; //i-code conversion buffer short var[26]; //Variable area short arr[SIZE_ARRY]; //Array area unsigned char listbuf[SIZE_LIST]; //List area unsigned char* clp; //Pointer current line unsigned char* cip; //Pointer current Intermediate code unsigned char* gstk[SIZE_GSTK]; //GOSUB stack unsigned char gstki; //GOSUB stack index unsigned char* lstk[SIZE_LSTK]; //FOR stack unsigned char lstki; //FOR stack index // Prototypes (necessity minimum) short iexp(void); // Keyword table const char* kwtbl[] = { "GOTO", "GOSUB", "RETURN", "FOR", "TO", "STEP", "NEXT", "IF", "REM", "STOP", "INPUT", "PRINT", "LET", ",", ";", "-", "+", "*", "/", "(", ")", ">=", "#", ">", "=", "<=", "<", "@", "RND", "ABS", "SIZE", "LIST", "RUN", "NEW" }; // Keyword count #define SIZE_KWTBL (sizeof(kwtbl) / sizeof(const char*)) // i-code(Intermediate code) assignment enum{ I_GOTO, I_GOSUB, I_RETURN, I_FOR, I_TO, I_STEP, I_NEXT, I_IF, I_REM, I_STOP, I_INPUT, I_PRINT, I_LET, I_COMMA, I_SEMI, I_MINUS, I_PLUS, I_MUL, I_DIV, I_OPEN, I_CLOSE, I_GTE, I_SHARP, I_GT, I_EQ, I_LTE, I_LT, I_ARRAY, I_RND, I_ABS, I_SIZE, I_LIST, I_RUN, I_NEW, I_NUM, I_VAR, I_STR, I_EOL }; // List formatting condition #define IS_OP(p) (p >= I_MINUS && p <= I_LT) // Operator style #define IS_SEP(p) (p == I_COMMA || p == I_SEMI) // Separator style #define IS_TOKSP(p) (/*p >= I_GOTO && */p <= I_LET && p != I_RETURN) // Token style // Error messages unsigned char err;// Error message index const char* errmsg[] ={ "OK", "Devision by zero", "Overflow", "Subscript out of range", "Icode buffer full", "List full", "GOSUB too many nested", "RETURN stack underflow", "FOR too many nested", "NEXT without FOR", "NEXT without counter", "NEXT mismatch FOR", "FOR without variable", "FOR without TO", "LET without variable", "IF without condition", "Undefined line number", "\'(\' or \')\' expected", "\'=\' expected", "Illegal command", "Syntax error", "Internal error", "Abort by [ESC]" }; // Error code assignment enum{ ERR_OK, ERR_DIVBY0, ERR_VOF, ERR_SOL, ERR_IBUFOF, ERR_LBUFOF, ERR_GSTKOF, ERR_GSTKUF, ERR_LSTKOF, ERR_LSTKUF, ERR_NEXTWOV, ERR_NEXTUM, ERR_FORWOV, ERR_FORWOTO, ERR_LETWOV, ERR_IFWOC, ERR_ULN, ERR_PAREN, ERR_VWOEQ, ERR_COM, ERR_SYNTAX, ERR_SYS, ERR_ESC }; // Standard C libraly (about same) functions char c_toupper(char c) {return(c <= 'z' && c >= 'a' ? c - 32 : c);} char c_isprint(char c) {return(c >= 32 && c <= 126);} char c_isspace(char c) {return(c <= ' ' &&(c == ' ' || (c <= 13 && c >= 9)));} char c_isdigit(char c) {return(c <= '9' && c >= '0');} char c_isalpha(char c) {return ((c <= 'z' && c >= 'a') || (c <= 'Z' && c >= 'A'));} char* c_strchr(char *s, char c){ while(*s) { if(*s == c) return (s); ++s; } return NULL; } void c_puts(const char *s) {while(*s) c_putch(*s++);} void c_gets(){ char c; unsigned char len; len = 0; while((c = c_getch()) != 13){ if( c == 9) c = ' '; // TAB exchange Space if((c == 8) && (len > 0)){ // Backspace manipulation len--; c_putch(8); c_putch(' '); c_putch(8); } else if(c_isprint(c) && (len < (SIZE_LINE - 1))){ lbuf[len++] = c; c_putch(c); } } newline(); lbuf[len] = 0; // Put NULL if(len > 0){ while(c_isspace(lbuf[--len])); // Skip space lbuf[++len] = 0; // Put NULL } } // GOSUB-RETURN stack void gpush(unsigned char* pd){ if(gstki < SIZE_GSTK){ gstk[gstki++] = pd; return; } err = ERR_GSTKOF; } unsigned char* gpop(){ if(gstki > 0){ return gstk[--gstki]; } err = ERR_GSTKUF; return NULL; } // FOR-NEXT stack void lpush(unsigned char* pd){ if(lstki < SIZE_LSTK){ lstk[lstki++] = pd; return; } err = ERR_LSTKOF; } unsigned char* lpop(){ if(lstki > 0){ return lstk[--lstki]; } err = ERR_LSTKUF; return NULL; } // Print OK or error message void error() { newline(); c_puts(errmsg[err]); newline(); err = 0; } // Print numeric specified columns void putnum(short value, short d){ unsigned char i; unsigned char sign; if(value < 0){ sign = 1; value = -value; } else { sign = 0; } lbuf[6] = 0; i = 6; do { lbuf[--i] = (value % 10) + '0'; value /= 10; } while(value > 0); if(sign) lbuf[--i] = '-'; //String length = 6 - i while(6 - i < d){ // If short c_putch(' '); // Fill space d--; } c_puts(&lbuf[i]); } // Input numeric and return value // Called by only INPUT statement short getnum(){ short value, tmp; char c; unsigned char len; unsigned char sign; len = 0; while((c = c_getch()) != 13){ if((c == 8) && (len > 0)){ // Backspace manipulation len--; c_putch(8); c_putch(' '); c_putch(8); } else if( (len == 0 && (c == '+' || c == '-')) || (len < 6 && c_isdigit(c))){ // Numeric or sign only lbuf[len++] = c; c_putch(c); } } newline(); lbuf[len] = 0; switch(lbuf[0]){ case '-': sign = 1; len = 1; break; case '+': sign = 0; len = 1; break; default: sign = 0; len = 0; break; } value = 0; // Initialize value tmp = 0; // Temp value while(lbuf[len]){ tmp = 10 * value + lbuf[len++] - '0'; if(value > tmp){ // It means overflow err = ERR_VOF; } value = tmp; } if(sign) return -value; return value; } // Byte X,L,H -> Short HL // Used to get line number or I_NUM value short getvalue(unsigned char* ip){ if(*ip == 0) return 32767; // Case X = 0 return((short)*(ip + 1) + ((short)*(ip + 2) << 8)); } // Get argument in parenthesis short getparam(){ short value; if(*cip != I_OPEN){ err = ERR_PAREN; return 0; } cip++; value = iexp(); if(err) return 0; if(*cip != I_CLOSE){ err = ERR_PAREN; return 0; } cip++; return value; } // Search line by line number unsigned char* getlp(short lineno){ unsigned char *lp; lp = listbuf; while(*lp){ if(getvalue(lp) >= lineno) break; lp += *lp; } return lp; } // Convert token to i-code // Return byte length or 0 unsigned char toktoi(){ unsigned char i; // Loop counter(i-code sometime) unsigned char len; //byte counter short value; short tmp; char* pkw; // Temporary keyword pointer char* ptok; // Temporary token pointer char c; // Surround the string character, " or ' char* s; // Pointer to charactor at line buffer s = lbuf; len = 0; // Clear byte length while(*s){ while(c_isspace(*s)) s++; // Skip space //Try keyword conversion for(i = 0; i < SIZE_KWTBL; i++){ pkw = (char *)kwtbl[i]; // Point keyword ptok = s; // Point top of command line // Compare while((*pkw != 0) && (*pkw == c_toupper(*ptok))){ pkw++; ptok++; } if(*pkw == 0){// Case success // i have i-code if(len >= SIZE_IBUF - 1){// List area full err = ERR_IBUFOF; return 0; } ibuf[len++] = i; s = ptok; break; } } // Case statement needs an argument except numeric, valiable, or strings switch(i){ case I_REM: while(c_isspace(*s)) s++; // Skip space ptok = s; for(i = 0; *ptok++; i++); // Get length if(len >= SIZE_IBUF - 2 - i){ err = ERR_IBUFOF; return 0; } ibuf[len++] = i; // Put length while(i--){ // Copy strings ibuf[len++] = *s++; } return len; default: break; } if(*pkw != 0){ // Case not keyword ptok = s; // Point top of command line // Try numeric conversion if(c_isdigit(*ptok)){ value = 0; tmp = 0; do{ tmp = 10 * value + *ptok++ - '0'; if(value > tmp){ err = ERR_VOF; return 0; } value = tmp; } while(c_isdigit(*ptok)); if(len >= SIZE_IBUF - 3){ err = ERR_IBUFOF; return 0; } s = ptok; ibuf[len++] = I_NUM; ibuf[len++] = value & 255; ibuf[len++] = value >> 8; } else // Try valiable conversion if(c_isalpha(*ptok)){ if(len >= SIZE_IBUF - 2){ err = ERR_IBUFOF; return 0; } if(len >= 2 && ibuf[len -2] == I_VAR){ // Case series of variables err = ERR_SYNTAX; // Syntax error return 0; } ibuf[len++] = I_VAR; // Put i-code ibuf[len++] = c_toupper(*ptok) - 'A'; // Put index of valiable area s++; } else // Try string conversion if(*s == '\"' || *s == '\''){// If start of string c = *s; s++; // Skip " or ' ptok = s; for(i = 0; (*ptok != c) && c_isprint(*ptok); i++) // Get length ptok++; if(len >= SIZE_IBUF - 1 - i){ // List area full err = ERR_IBUFOF; return 0; } ibuf[len++] = I_STR; // Put i-code ibuf[len++] = i; // Put length while(i--){ // Put string ibuf[len++] = *s++; } if(*s == c) s++; // Skip " or ' // Nothing mutch } else { err = ERR_SYNTAX; return 0; } } } ibuf[len++] = I_EOL; // Put end of line return len; // Return byte length } //Listing 1 line of i-code void putlist(unsigned char* ip){ unsigned char i; short value; while(*ip != I_EOL){ // Case keyword if(*ip < SIZE_KWTBL){ c_puts(kwtbl[*ip]); if(IS_TOKSP(*ip) || *ip == I_SEMI)c_putch(' '); if(*ip == I_REM){ ip++; i = *ip++; while(i--){ c_putch(*ip++); } return; } ip++; } else // Case numeric if(*ip == I_NUM){ putnum(getvalue(ip), 0); ip += 3; if(!IS_OP(*ip) && !IS_SEP(*ip)) c_putch(' '); } else // Case valiable if(*ip == I_VAR){ ip++; c_putch(*ip++ + 'A'); if(!IS_OP(*ip) && !IS_SEP(*ip)) c_putch(' '); } else // Case string if(*ip == I_STR){ ip++; value = 0; i = *ip; while(i--){ if(*(ip + i + 1) == '\"') value = 1; } if(value) c_putch('\''); else c_putch('\"'); i = *ip++; while(i--){ c_putch(*ip++); } if(value) c_putch('\''); else c_putch('\"'); // Nothing match, I think, such case is impossible } else { err = ERR_SYS; return; } } } // Insert i-code to the list void inslist(){ unsigned char len; unsigned char *lp1, *lp2; cip = ibuf; clp = getlp(getvalue(cip)); lp1 = clp; if(getvalue(lp1) == getvalue(cip)){ // Temporary measures of the case that // same line numbere exists and list area full, // existing line is deleted and new line is not inserted in. // if((getsize() - *lp1) < *cip){ // err = ERR_LBUFOF; // return; // } lp2 = lp1 + *lp1; while((len = *lp2) != 0){ while(len--){ *lp1++ = *lp2++; } } *lp1 = 0; } // Case line number only if(*cip == 4) return; // Check insertable while(*lp1){ lp1 += *lp1; } if(*cip > (listbuf + SIZE_LIST - lp1 - 1)){ err = ERR_LBUFOF; return; } // Make space len = lp1 - clp + 1; lp2 = lp1 + *cip; while(len--){ *lp2-- = *lp1--; } // Insert len = *cip; while(len--){ *clp++ = *cip++; } } // Return free memory short getsize(){ short value; unsigned char* lp; lp = listbuf; while(*lp){ lp += *lp; } value = listbuf + SIZE_LIST - lp - 1; return value; } // Return Absolute value short getabs(){ short value; value = getparam(); if(err) return 0; if(value < 0) value *= -1; return value; } // Return random number // TO-DO Rewrite this function to fit your machine short getrnd(void){ short value; value = getparam(); if(err) return 0; return(rand() % value); } short getarray() { short index; index = getparam(); if(err) return 0; if(index < SIZE_ARRY){ return arr[index]; } else { err = ERR_SOL; return 0; } } short ivalue(){ short value; switch(*cip){ case I_PLUS: cip++; value = ivalue(); break; case I_MINUS: cip++; value = 0 - ivalue(); break; case I_VAR: cip++; value = var[*cip++]; break; case I_NUM: value = getvalue(cip); cip += 3; break; case I_ARRAY: cip++; value = getarray(); break; case I_OPEN: value = getparam(); break; case I_RND: cip++; value = getrnd(); break; case I_ABS: cip++; value = getabs(); break; case I_SIZE: cip++; if(*cip == I_OPEN){ cip++; if(*cip == I_CLOSE) cip++; else{ err = ERR_PAREN; } } value = getsize(); break; default: value = 0; err = ERR_SYNTAX; break; } return value; } short icalc() { short value1, value2; value1 = ivalue(); while(1){ if(*cip == I_DIV){ cip++; value2 = ivalue(); if(value2 == 0){ err = ERR_DIVBY0; break; } value1 /= value2; } else if(*cip == I_MUL){ cip++; value2 = ivalue(); value1 *= value2; } else { break; } } return value1; } short iexp() { short value1, value2; value1 = icalc(); while(*cip == I_PLUS || *cip == I_MINUS){ value2 = icalc(); value1 += value2; } return value1; } void iprint(){ short value; short len; unsigned char i; len = 0; while(1){ switch(*cip){ case I_SEMI: case I_EOL: break; case I_STR: cip++; i = *cip++; while(i--){ c_putch(*cip++); } break; case I_SHARP: cip++; len = iexp(); if(err) return; break; default: value = iexp(); if(err) return; putnum(value, len); break; } if(*cip == I_COMMA){ cip++; }else{ break; } }; newline(); } void iinput(){ unsigned char i; short value; short index; while(1){ switch(*cip){ case I_STR: cip++; i = *cip++; while(i--){ c_putch(*cip++); } if(*cip == I_VAR){ cip++; value = getnum(); var[*cip++] = value; } else if(*cip == I_ARRAY){ cip++; index = getparam(); if(err) return; if(index >= SIZE_ARRY){ err = ERR_SOL; return; } value = getnum(); arr[index] = value; } break; case I_VAR: cip++; c_putch(*cip + 'A'); c_putch(':'); value = getnum(); var[*cip++] = value; break; case I_ARRAY: cip++; index = getparam(); if(err) return; if(index >= SIZE_ARRY){ err = ERR_SOL; return; } c_putch('@');c_putch('('); putnum(index,0); c_putch(')');c_putch(':'); value = getnum(); arr[index] = value; break; } switch(*cip){ case I_COMMA: cip++; break; case I_SEMI: case I_EOL: return; default: err = ERR_SYNTAX; return; } } } char iif(){ short value1, value2; unsigned char i; value1 = iexp(); if(err) return -1; i = *cip++; value2 = iexp(); if(err) return -1; switch(i){ case I_EQ: return value1 == value2; case I_SHARP: return value1 != value2; case I_LT: return value1 < value2; case I_LTE: return value1 <= value2; case I_GT: return value1 > value2; case I_GTE: return value1 >= value2; default: err = ERR_IFWOC; return -1; } } void ivar(){ short value; short index; index = *cip++; if(*cip == I_EQ){ cip++; value = iexp(); if(err) return; } else { err = ERR_VWOEQ; return; } if(index < 26){ var[index] = value; } else { err = ERR_SOL; } } void iarray(){ short value; short index; index = getparam(); if(err) return; if(*cip == I_EQ){ cip++; value = iexp(); if(err) return; } else { err = ERR_VWOEQ; return; } if(index < SIZE_ARRY){ arr[index] = value; } else { err = ERR_SOL; } } void ilet(){ switch(*cip){ case I_VAR: cip++; ivar(); break; case I_ARRAY: cip++; iarray(); break; default: err = ERR_LETWOV; break; } } void ilist(){ short lineno; if(*cip == I_NUM){ lineno = getvalue(cip); cip += 3; } else { lineno = 0; } for( clp = listbuf; *clp && (getvalue(clp) < lineno); clp += *clp); while(*clp){ putnum(getvalue(clp), 0); c_putch(' '); putlist(clp + 3); if(err){ break; } newline(); clp += *clp; } } void inew(void){ unsigned char i; for(i = 0; i < 26; i++) var[i] = 0; gstki = 0; lstki = 0; *listbuf = 0; clp = listbuf; } unsigned char* iexe(){ short lineno; unsigned char cd; unsigned char* lp; short vto, vstep; short index; while(1){ if(c_kbhit()){ if(c_getch() == 27){ while(*clp){ clp += *clp; } err = ERR_ESC; return clp; } } switch(*cip){ case I_GOTO: cip++; lineno = iexp(); clp = getlp(lineno); if(lineno != getvalue(clp)){ err = ERR_ULN; return NULL; } cip = clp + 3; continue; case I_GOSUB: cip++; lineno = iexp(); if(err) return NULL; lp = getlp(lineno); if(lineno != getvalue(lp)){ err = ERR_ULN; return NULL; } gpush(clp); gpush(cip); if(err) return NULL; clp = lp; cip = clp + 3; continue; case I_RETURN: cip = gpop(); lp = gpop(); if(err) return NULL; clp = lp; break; case I_FOR: cip++; if(*cip++ != I_VAR){ err = ERR_FORWOV; return NULL; } index = *cip; ivar(); if(err) return NULL; if(*cip == I_TO){ cip++; vto = iexp(); } else { err = ERR_FORWOTO; return NULL; } if(*cip == I_STEP){ cip++; vstep = iexp(); } else { vstep = 1; } lpush(clp); lpush(cip); lpush((unsigned char*)vto); lpush((unsigned char*)vstep); lpush((unsigned char*)index); if(err) return NULL; break; case I_NEXT: cip++; if(*cip++ !=I_VAR){ err = ERR_NEXTWOV; return NULL; } if(lstki < 5){ err = ERR_LSTKUF; return NULL; } index = (short)lstk[lstki - 1]; if(index != *cip){ err = ERR_NEXTUM; return NULL; } cip++; vstep = (short)lstk[lstki - 2]; var[index] += vstep; vto = (short)lstk[lstki - 3]; if( ((vstep < 0) && (var[index] < vto)) || ((vstep > 0) && (var[index] > vto))){ lstki -= 5; break; } cip = lstk[lstki - 4]; clp = lstk[lstki - 5]; continue; case I_IF: cip++; cd = iif(); if(err){ err = ERR_IFWOC; return NULL; } if(cd) continue; // If false, same as REM case I_REM: // Seek pointer to I_EOL // No problem even if it points not realy end of line while(*cip != I_EOL) cip++; break; case I_STOP: while(*clp){ clp += *clp; } return clp; case I_INPUT: cip++; iinput(); break; case I_PRINT: cip++; iprint(); break; case I_LET: cip++; ilet(); break; case I_VAR: cip++; ivar(); break; case I_ARRAY: cip++; iarray(); break; case I_LIST: case I_NEW: case I_RUN: err = ERR_COM; return NULL; } switch(*cip){ case I_SEMI: cip++; break; case I_EOL: return clp + *clp; default: err = ERR_SYNTAX; return NULL; } } } void irun(){ unsigned char* lp; gstki = 0; lstki = 0; clp = listbuf; while(*clp){ cip = clp + 3; lp = iexe(); if(err) return; clp = lp; } } void icom(){ cip = ibuf; switch(*cip){ case I_LIST: cip++; if(*cip == I_EOL || *(cip + 3) == I_EOL) ilist(); else err = ERR_SYNTAX; break; case I_NEW: cip++; if(*cip == I_EOL) inew(); else err = ERR_SYNTAX; break; case I_RUN: cip++; irun(); break; default: iexe(); break; } if(err && err != ERR_ESC){ if(cip >= listbuf && cip < listbuf + SIZE_LIST && *clp) { newline(); c_puts("ERR LINE:"); putnum(getvalue(clp), 0); c_putch(' '); putlist(clp + 3); } else { newline(); c_puts("YOU TYPE: "); putlist(ibuf); } } } void basic(){ unsigned char len; /// sci2_init(); uart_init(115200); inew(); c_puts("TOYOSHIKI TINY BASIC"); newline(); /// c_puts("PIC24F EDITION"); newline(); c_puts("LPCXpresso EDITION"); newline(); error(); // Print OK, and Clear error flag // Input 1 line and execute while(1){ c_putch('>');// Prompt c_gets(); // Input 1 line len = toktoi(); // Convert token to i-code if(err){ // Error newline(); c_puts("YOU TYPE:"); c_puts(lbuf); error(); continue; // Do nothing } if(*ibuf == I_NUM){ // Case the top includes line number *ibuf = len; // Change I_NUM to byte length inslist(); // Insert list if(err){ error(); // List buffer overflow } } else { icom(); // Execute direct error(); // Print OK, and Clear error flag } } }
