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I2C. Alberto's clock setting code tested. Minor changes. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/i2c_dev@2721 35acf78f-673a-0410-8e92-d51de3d6d3f4
master
barthess 2011-02-09 15:00:08 +00:00
parent 918ff6d6b6
commit eddd171ec8
1 changed files with 3 additions and 7 deletions
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10
os/hal/platforms/STM32/i2c_lld.c
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@ -225,14 +225,11 @@ void i2c_lld_start(I2CDriver *i2cp) {
i2cp->id_i2c->CR1 = 0; i2cp->id_i2c->CR1 = 0;
i2c_lld_set_clock(i2cp); i2c_lld_set_clock(i2cp);
i2cp->id_i2c->CR2 |= I2C_CR2_ITERREN | I2C_CR2_ITEVTEN | I2C_CR2_ITBUFEN;
i2cp->id_i2c->CR1 |= 1; // enable interface i2cp->id_i2c->CR1 |= 1; // enable interface
} }
//TODO: dox here
// int32_t clock_speed, I2C_DutyCycle_t duty
void i2c_lld_set_clock(I2CDriver *i2cp) { void i2c_lld_set_clock(I2CDriver *i2cp) {
volatile uint16_t regCCR, regCR2, freq, clock_div; volatile uint16_t regCCR, regCR2, freq, clock_div;
volatile uint16_t pe_bit_saved; volatile uint16_t pe_bit_saved;
@ -403,8 +400,7 @@ void i2c_lld_master_start(I2CDriver *i2cp){
while (i2cp->id_i2c->CR1 & I2C_CR1_START); while (i2cp->id_i2c->CR1 & I2C_CR1_START);
// enable interrupts // enable interrupts
i2cp->id_i2c->CR2 |= I2C_CR2_ITEVTEN; i2cp->id_i2c->CR2 |= I2C_CR2_ITEVTEN | I2C_CR2_ITBUFEN;
i2cp->id_i2c->CR2 |= I2C_CR2_ITBUFEN;
} }
void i2c_lld_master_stop(I2CDriver *i2cp){ void i2c_lld_master_stop(I2CDriver *i2cp){