uart_driver.rar_Uart_Driver_uart driver

#include "stdio.h" #include "stdlib.h" #include <string.h> #include "command.h" extern void set_baud_rate(int baud); extern void wait(int time); const unsigned char PT[16] = {0,1,1,0, 1,0,0,1, 1,0,0,1, 0,1,1,0}; char parity(char Byte) { if ( ((PT[(Byte>>4)&0xf] + PT[(Byte & 0xF)]) & 1) ) return Byte; else return (Byte | 1); } int baud_rate_table[8] = {2400,4800,9600,19200,38400,57600,115200,230400}; int set_uart_baud_rate(int baud_rate) { int i,num; char byte; num = -1; for(i=0;i<8;i++) { if(baud_rate == baud_rate_table[i]) { num = i; break; } } if(num == -1) return ERROR; send_one_byte(parity((char)(CMD_UART_SBR|((num<<1)&0xe)))); if(receive_one_byte(&byte) != OK) return ERROR; if(byte != 0x57) return ERROR; set_baud_rate(baud_rate); //change baud rate send_one_byte(CMD_VERIFICTION); if(receive_one_byte(&byte) != OK) return ERROR; if(byte != (~CMD_VERIFICTION)) return ERROR; return OK; } int req_status(void) { char byte; send_one_byte(CMD_REQ_STATUS); if(receive_one_byte(&byte) != OK) return ERROR; return byte; } int whole_control(int com) { if(com == 0) send_one_byte(CMD_STOP_ALL); else if(com == 1) send_one_byte(CMD_PLAY_ALL); else return ERROR; return OK; } int speech_control(int com) { if(com == 0) send_one_byte(CMD_STOP_SPEECH); else if(com == 1) send_one_byte(CMD_PLAY_SPEECH); else if(com == 2) send_one_byte(CMD_PAUSE_SPEECH); else if(com == 3) send_one_byte(CMD_MUTE_SPEECH); else return ERROR; return OK; } int midi_control(int com) { if(com == 0) send_one_byte(CMD_STOP_MIDI); else if(com == 1) send_one_byte(CMD_PLAY_MIDI); else if(com == 2) send_one_byte(CMD_PAUSE_MIDI); else if(com == 3) send_one_byte(CMD_MUTE_MIDI); else return ERROR; return OK; } int set_volume(int volume) { if((volume > 0x7ff) || (volume < 0x00)) return ERROR; send_one_byte(parity((char)(CMD_SET_VOLUME|((volume>>7)&0x1e)))); send_one_byte((char)(volume&0xff)); return OK; } int clear_dbe(void) { send_one_byte(CMD_CLEAR_DBE); return OK; } int set_bit_rates(int bit_rates) { if((bit_rates > 10) || (bit_rates < 1)) return ERROR; send_one_byte(parity((char)(CMD_SPEECH_BIT_RATES|((bit_rates<<1)&0x1e)))); return OK; } int speech_channel_select(int sel) { if(sel == 0) send_one_byte(CMD_SPEECH_SELECT_LBR); else if(sel == 1) send_one_byte(CMD_SPEECH_SELECT_HBR); else return ERROR; return OK; } int speech_filter_control(int com) { if(com == 0) send_one_byte(CMD_FILTER_DISABLE); else if(com == 1) send_one_byte(CMD_FILTER_ENABLE); else return ERROR; return OK; } int set_lbr_speed(int speed) { if((speed > 15) || (speed < 0)) return ERROR; send_one_byte(parity((char)(CMD_SET_LBRSPEED|((speed<<1)&0x1e)))); return OK; } int set_midi_volume(int volume) { send_one_byte((char)CMD_MIDI_VOL0); send_one_byte((char)((volume>>24)&0xff)); send_one_byte((char)CMD_MIDI_VOL1); send_one_byte((char)((volume>>16)&0xff)); send_one_byte((char)CMD_MIDI_VOL2); send_one_byte((char)((volume>>8)&0xff)); send_one_byte((char)CMD_MIDI_VOL3); send_one_byte((char)((volume)&0xff)); return OK; } int clear_input_buffer(int com) { if(com == 0) send_one_byte((char)CMD_CLEAR_ALL); else if(com == 1) send_one_byte((char)CMD_CLEAR_VOICE); else if(com == 2) send_one_byte((char)CMD_CLEAR_MIDI); else return ERROR; return OK; } int read_ram(char *pOut, int start_address, int size) { int i; if(start_address >= 2048 || start_address < 0 || size>=2048 || size < 0) return ERROR; send_one_byte((char)CMD_SET_RAM_ADD); send_one_byte((char)((start_address>>8) & 0xff)); send_one_byte((char)(start_address & 0xff)); for(i=0;i<size;i++) { send_one_byte((char)CMD_READ_RAM); if(receive_one_byte(pOut++) != OK) return ERROR; } return OK; } int write_ram(char *pIn, int start_address, int size) { int i; if(start_address >= 2048 || start_address < 0 || size>=2048 || size < 0) return ERROR; send_one_byte((char)CMD_SET_RAM_ADD); send_one_byte((char)((start_address>>8) & 0xff)); send_one_byte((char)(start_address & 0xff)); for(i=0;i<size;i++) { send_one_byte((char)CMD_WRITE_RAM); send_one_byte(*pIn++); } return OK; } int set_gpio_dir(int sel, int dir) { if(sel == 0) { send_one_byte((char)CMD_SET_GPIOL_DIR); send_one_byte((char)(dir&0xff)); } else if(sel == 1) { send_one_byte((char)CMD_SET_GPIOH_DIR); send_one_byte((char)(dir&0xff)); } else return ERROR; return OK; } int read_gpio_data(int sel, char* data) { if(sel == 0) { send_one_byte((char)CMD_READ_GPIOL); if(receive_one_byte(data) != OK) return ERROR; } else if(sel == 1) { send_one_byte((char)CMD_READ_GPIOH); if(receive_one_byte(data) != OK) return ERROR; } else return ERROR; return OK; } int write_gpio_data(int sel, char data) { if(sel == 0) { send_one_byte((char)CMD_WRITE_GPIOL); send_one_byte((char)(data&0xff)); } else if(sel == 1) { send_one_byte((char)CMD_WRITE_GPIOH); send_one_byte((char)(data&0xff)); } else return ERROR; return OK; } const int speech_data_len_tbl[] = {0, 1, 4, 8, 16, 32, 64, 128}; const int music_data_len_tbl[] = {0, 1, 4, 8, 16, 32, 64, 128}; int send_speech_data(char* pIn, int size) { char byte; if(size < 0) return ERROR; while(size != 0) { if(size >= 128) { send_one_byte(parity((char)CMD_SPEECH_DATA_TRANSFER|(0x7<<1))); send_bytes(pIn,128); pIn += 128; size -= 128; if(receive_one_byte(&byte) != OK) return ERROR; } else if(size >= 64) { send_one_byte(parity((char)CMD_SPEECH_DATA_TRANSFER|(0x6<<1))); send_bytes(pIn,64); pIn += 64; size -= 64; if(receive_one_byte(&byte) != OK) return ERROR; } else if(size >= 32) { send_one_byte(parity((char)CMD_SPEECH_DATA_TRANSFER|(0x5<<1))); send_bytes(pIn,32); pIn += 32; size -= 32; if(receive_one_byte(&byte) != OK) return ERROR; } else if(size >= 16) { send_one_byte(parity((char)CMD_SPEECH_DATA_TRANSFER|(0x4<<1))); send_bytes(pIn,16); pIn += 16; size -= 16; if(receive_one_byte(&byte) != OK) return ERROR; } else if(size >= 8) { send_one_byte(parity((char)CMD_SPEECH_DATA_TRANSFER|(0x3<<1))); send_bytes(pIn,8); pIn += 8; size -= 8; if(receive_one_byte(&byte) != OK) return ERROR; } else if(size >= 4) { send_one_byte(parity((char)CMD_SPEECH_DATA_TRANSFER|(0x2<<1))); send_bytes(pIn,4); pIn += 4; size -= 4; if(receive_one_byte(&byte) != OK) return ERROR; } else if(size >= 1) { send_one_byte(parity((char