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https://github.com/meshtastic/firmware.git
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81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
#include "../configuration.h"
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#include "../main.h"
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#include <Wire.h>
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#ifndef NO_WIRE
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uint8_t oled_probe(byte addr)
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{
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uint8_t r = 0;
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uint8_t o_probe = 0;
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Wire.beginTransmission(addr);
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Wire.write(0x00);
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Wire.endTransmission();
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Wire.requestFrom((int)addr, 1);
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if (Wire.available()) {
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r = Wire.read();
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}
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r &= 0x0f;
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if (r == 0x08 || r == 0x00) {
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o_probe = 2; // SH1106
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} else if ( r == 0x03 || r == 0x06 || r == 0x07) {
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o_probe = 1; // SSD1306
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}
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DEBUG_MSG("0x%x subtype probed\n", r);
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return o_probe;
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}
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void scanI2Cdevice(void)
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{
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byte err, addr;
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int nDevices = 0;
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for (addr = 1; addr < 127; addr++) {
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Wire.beginTransmission(addr);
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err = Wire.endTransmission();
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if (err == 0) {
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DEBUG_MSG("I2C device found at address 0x%x\n", addr);
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nDevices++;
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if (addr == SSD1306_ADDRESS) {
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screen_found = addr;
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screen_model = oled_probe(addr);
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if (screen_model == 1){
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DEBUG_MSG("ssd1306 display found\n");
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} else if (screen_model == 2){
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DEBUG_MSG("sh1106 display found\n");
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} else {
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DEBUG_MSG("unknown display found\n");
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}
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}
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if (addr == CARDKB_ADDR) {
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cardkb_found = addr;
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DEBUG_MSG("m5 cardKB found\n");
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}
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if (addr == FACESKB_ADDR) {
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faceskb_found = addr;
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DEBUG_MSG("m5 Faces found\n");
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}
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if (addr == ST7567_ADDRESS) {
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screen_found = addr;
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DEBUG_MSG("st7567 display found\n");
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}
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#ifdef AXP192_SLAVE_ADDRESS
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if (addr == AXP192_SLAVE_ADDRESS) {
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axp192_found = true;
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DEBUG_MSG("axp192 PMU found\n");
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}
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#endif
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} else if (err == 4) {
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DEBUG_MSG("Unknow error at address 0x%x\n", addr);
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}
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}
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if (nDevices == 0)
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DEBUG_MSG("No I2C devices found\n");
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else
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DEBUG_MSG("done\n");
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}
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#else
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void scanI2Cdevice(void) {}
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#endif
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