mirror of https://github.com/SMFSW/cI2C
47 lines
1.1 KiB
C++
Executable File
47 lines
1.1 KiB
C++
Executable File
/*
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Master i2c write
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Write some bytes to FRAM and compare them
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with what's read afterwards
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This example code is in the public domain.
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created Jan 12 2017
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latest mod Jan 31 2017
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by SMFSW
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*/
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#include <ci2c.h>
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const uint8_t blank = 0xEE; // blank tab filling value for test
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I2C_SLAVE FRAM; // slave declaration
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void setup() {
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Serial.begin(115200); // start serial for output
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I2C_init(I2C_FM); // init with Fast Mode (400KHz)
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I2C_slave_init(&FRAM, 0x50, I2C_16B_REG);
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}
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void loop() {
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const uint16_t reg_addr = 0xF000;
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uint8_t str[7] = { 0x55, 20, 30, 40, 50, 60, 0xAA };
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bool match = true;
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uint8_t str_out[7];
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memset(&str_out, blank, sizeof(str));
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I2C_write(&FRAM, reg_addr, &str[0], sizeof(str)); // FRAM, Addr 0, str, read chars for size of str
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Serial.println();
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I2C_read(&FRAM, reg_addr, &str_out[0], sizeof(str));
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for (uint8_t i = 0; i < sizeof(str_out); i++)
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{
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if (str[i] != str_out[i]) { match = false; }
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Serial.print(str_out[i], HEX); // print hex values
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Serial.print(" ");
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}
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Serial.print("WRITE ");
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Serial.print(match ? "OK" : "NOK");
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while(1);
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} |