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42 lines
930 B
42 lines
930 B
/*
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I2C MODULE
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Copyright (C) 2017 by Xose Pérez <xose dot perez at gmail dot com>
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*/
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#if I2C_SUPPORT
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#include "brzo_i2c.h"
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bool i2cCheck(unsigned char address) {
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brzo_i2c_start_transaction(address, I2C_SCL_FREQUENCY);
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brzo_i2c_ACK_polling(1000);
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return brzo_i2c_end_transaction();
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}
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void i2cScan() {
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unsigned char nDevices = 0;
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for (unsigned char address = 1; address < 128; address++) {
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unsigned char response = i2cCheck(address);
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if (response == 0) {
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DEBUG_MSG_P(PSTR("[I2C] Device found at address 0x%02X\n"), address);
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nDevices++;
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} else if (response != 32) {
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//DEBUG_MSG_P(PSTR("[I2C] Unknown error at address 0x%02X\n"), address);
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}
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}
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if (nDevices == 0) DEBUG_MSG_P(PSTR("[I2C] No devices found\n"));
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}
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void i2cSetup() {
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brzo_i2c_setup(I2C_SDA_PIN, I2C_SCL_PIN, I2C_CLOCK_STRETCH_TIME);
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i2cScan();
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}
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#endif
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