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#include "board.h"
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#include "board.h"
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#include "cpu-utils.h"
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#include "cpu-utils.h"
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#include "i2c_master_slave.h"
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#include "i2c_master_slave.h"
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// Ensure board.h defines I2C_MASTER_SLAVE_NUM_CORES and
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// I2C_MASTER_SLAVE_BASE_ADDRESSES_CSV which should be the base address values
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// separated with commas
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#ifdef I2C_MASTER_SLAVE_NUM_CORES
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const int I2C_MASTER_SLAVE_BASE_ADR[I2C_MASTER_SLAVE_NUM_CORES] = {
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I2C_MASTER_SLAVE_BASE_ADDRESSES_CSV };
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#else
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const int I2C_MASTER_SLAVE_BASE_ADR[1] = {-1};
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#endif
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inline unsigned char i2c_master_slave_read_reg(int core, unsigned char addr)
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inline unsigned char i2c_master_slave_read_reg(int core, unsigned char addr)
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{
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{
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return REG8((i2c_base_adr[core] + addr));
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return REG8((I2C_MASTER_SLAVE_BASE_ADR[core] + addr));
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}
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}
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inline void i2c_master_slave_write_reg(int core, unsigned char addr,
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inline void i2c_master_slave_write_reg(int core, unsigned char addr,
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unsigned char data)
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unsigned char data)
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{
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{
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REG8((i2c_base_adr[core] + addr)) = data;
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REG8((I2C_MASTER_SLAVE_BASE_ADR[core] + addr)) = data;
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}
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}
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int i2c_master_slave_wait_for_busy(int core)
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int i2c_master_slave_wait_for_busy(int core)
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{
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{
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while (1) {
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while (1) {
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// set command (write) and stop
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// set command (write) and stop
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i2c_master_slave_write_reg(core, I2C_MASTER_SLAVE_CR,
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i2c_master_slave_write_reg(core, I2C_MASTER_SLAVE_CR,
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I2C_MASTER_SLAVE_CR_WRITE |
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I2C_MASTER_SLAVE_CR_WRITE |
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I2C_MASTER_SLAVE_CR_STOP);
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I2C_MASTER_SLAVE_CR_STOP);
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return 0;
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return i2c_master_slave_wait_for_transfer(core);
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}
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}
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/***********************************************************
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/***********************************************************
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* i2c_master_slave_master_stop *
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* i2c_master_slave_master_stop *
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* *
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* *
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if (i2c_master_slave_wait_for_transfer(core))
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if (i2c_master_slave_wait_for_transfer(core))
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return 1;
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return 1;
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*data = i2c_master_slave_read_reg(core, I2C_MASTER_SLAVE_RXR);
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*data = i2c_master_slave_read_reg(core, I2C_MASTER_SLAVE_RXR);
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return 0;
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return i2c_master_slave_wait_for_transfer(core);
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}
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}
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/***********************************************************
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/***********************************************************
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* i2c_master_slave_ack_interrupt *
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* i2c_master_slave_ack_interrupt *
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* *
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* *
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