在要读取的地址前增加“pgm_read_byte” NumFLASH[0]和NumFLASH[1]都正常显示了,为什么NumFLASH[2] = 300没有正常显示呢? 这是因为“pgm_read_byte”中byte的关系,它属于读取数据的数据类型,也就是每次只读1个字节的数字: 100 =0B 0110 0100 200 =0B 1100 1000 可以看到一个字节都可以表示 300 =0B ...
c = pgm_read_byte(keymap->noshift + s);}if (state & CTRL) { //ctrl加字母组合键CombinationKey = 1;if (c >= 'A' && c <= 'Z')c=0-c;else if (c >= 'a' && c <= 'z')c=0-c;else if (c == PS2_ENTER)c = PS2_LINEFEED;}if (state & ALTGR) { //alt加字母组合...
pgm_read_byte_near(address_short) pgm_read_word_near(address_short) pgm_read_dword_near(address_short) pgm_read_float_near(address_short) pgm_read_ptr_near(address_short) 另一种是采用32位地址的长地址寻址,最多寻址4GB空间: pgm_read_byte_far(address_short) pgm_read_word_far(address_short)...
I have the following code: PROGMEM const uint8_t table[2][3] = { {0x7B,0x60,0x5D}, {0x7D,0x48,0x3E} }; void setup() { Serial.begin(115200); } void loop() { uint8_t data = pgm_read_byte(&table[1][1]); Serial.println(data, HEX); delay(250)...
解决方法:把这个静态数组放在MCU的FLASHROM中,而不必存在RAM里。试试这样:const unsigned char wav[] PROGMEM = {...};这里的PROGMEM就是把数组放在flashrom中,读取数组内容的时候,用pgm_read_byte(&wav[123]);//假设读数组第124个元素这样来读取。程序开头还要加上 #include <avr/pgmspace.h>更直接的去ardu...
if(pgm_read_byte(&tfont16[k].Msk[j])&(0x80>>i)) { color = fc; } else { color = bc; } my_lcd.Push_Any_Color(&color, 1, first, 0); first = false; } } } } } } void show_24font(uint16_t x, uint16_t y,uint16_t fc, uint16_t bc,uint8_t *str,uint8_t mode...
read_byte(&tfont32[k].Index[0]) == *str) && (pgm_read_byte(&tfont32[k].Index[1]) == *(str + 1))) { my_lcd_Addr_Window(x, y, x + 32 - 1, y + 32 - 1); for (j 0; j < 128; j++) { for 0; i < 8; i++) { if ( //叠加模式 { if (...
(h - yy - 1) : yy) * wid; //位偏移量 const uint8_t *p = bmp + (ofs >> 3); //闪存地址 uint8_t mask = 0x80 >> (ofs & 7); //位元遮罩 uint8_t c = pgm_read_byte(p++); for (xx = 0; xx < w; xx++) { if (mask == 0) { c = pgm_read_byte(p++); mask...
PGM_P str = result[i].msg; char c; if (len > 24) { if (i < 10) tft.print(" "); tft.print(i); tft.print(": "); } uint8_t cnt = len; while ((c = pgm_read_byte(str++)) && cnt--) tft.print(c); tft.print(" "); ...
= 0) { p[0] |= MQTT_CONN_WILLFLAG; if(will_qos == 1) p[0] |= MQTT_CONN_WILLQOS_1; else if(will_qos == 2) p[0] |= MQTT_CONN_WILLQOS_2; if(will_retain == 1) p[0] |= MQTT_CONN_WILLRETAIN; } if (pgm_read_byte(username) != 0) p[0] |= MQTT_CONN_USERNAME...