avr/cI2C
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code review, changes following Wire lib updates & const for function parameters

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SMFSW 2017-11-21 23:15:55 +01:00
parent 035edd6d7f
commit ed7030cffc
6 changed files with 84 additions and 92 deletions
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16
examples/ci2c_advanced/ci2c_advanced.ino
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@ -7,7 +7,7 @@
This example code is in the public domain.
created Jan 12 2017
latest mod Jan 31 2017
latest mod Nov 21 2017
by SMFSW
*/
@ -24,8 +24,8 @@ void setup() {
Serial.begin(115200); // start serial for output
I2C_init(I2C_FM); // init with Fast Mode (400KHz)
I2C_slave_init(&FRAM, 0x50, I2C_16B_REG);
I2C_slave_set_rw_func(&FRAM, I2C_wr_advanced, I2C_WRITE);
I2C_slave_set_rw_func(&FRAM, I2C_rd_advanced, I2C_READ);
I2C_slave_set_rw_func(&FRAM, (ci2c_fct_ptr) I2C_wr_advanced, I2C_WRITE);
I2C_slave_set_rw_func(&FRAM, (ci2c_fct_ptr) I2C_rd_advanced, I2C_READ);
I2C_get_chip_id(&FRAM, &str[0]);
@ -62,8 +62,10 @@ void loop() {
* \param [in] bytes - indicates how many bytes of data to write
* \return Boolean indicating success/fail of write attempt
*/
bool I2C_wr_advanced(I2C_SLAVE * slave, uint16_t reg_addr, uint8_t * data, uint16_t bytes)
bool I2C_wr_advanced(I2C_SLAVE * slave, const uint16_t reg_addr, uint8_t * data, const uint16_t bytes)
{
if (bytes == 0) { return false; }
slave->reg_addr = reg_addr;
if (I2C_start() == false) { return false; }
@ -96,11 +98,11 @@ bool I2C_wr_advanced(I2C_SLAVE * slave, uint16_t reg_addr, uint8_t * data, uint1
* \param [in] bytes - indicates how many bytes of data to read
* \return Boolean indicating success/fail of read attempt
*/
bool I2C_rd_advanced(I2C_SLAVE * slave, uint16_t reg_addr, uint8_t * data, uint16_t bytes)
bool I2C_rd_advanced(I2C_SLAVE * slave, const uint16_t reg_addr, uint8_t * data, const uint16_t bytes)
{
slave->reg_addr = reg_addr;
if (bytes == 0) { return false; }
if (bytes == 0) { bytes = 1; }
slave->reg_addr = reg_addr;
if (slave->cfg.reg_size)
{