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stm32: i2c-v2: drop overly restrictive helpers.

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* didn't follow naming conventions
* overly restricted to single byte register style commands.

Will be replaced by freeform transfer functions
This commit is contained in:
Karl Palsson 2017-03-23 23:43:42 +00:00
parent 1edcc1b7da
commit fb3b5e08f3
2 changed files with 0 additions and 79 deletions
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4
include/libopencm3/stm32/common/i2c_common_v2.h
View File

@ -427,10 +427,6 @@ void i2c_enable_rxdma(uint32_t i2c);
void i2c_disable_rxdma(uint32_t i2c);
void i2c_enable_txdma(uint32_t i2c);
void i2c_disable_txdma(uint32_t i2c);
void write_i2c(uint32_t i2c, uint8_t i2c_addr, uint8_t reg,
uint8_t size, uint8_t *data);
void read_i2c(uint32_t i2c, uint8_t i2c_addr, uint8_t reg,
uint8_t size, uint8_t *data);
END_DECLS

75
lib/stm32/common/i2c_common_v2.c
View File

@ -375,79 +375,4 @@ void i2c_disable_txdma(uint32_t i2c)
I2C_CR1(i2c) &= ~I2C_CR1_TXDMAEN;
}
void write_i2c(uint32_t i2c, uint8_t i2c_addr, uint8_t reg, uint8_t size,
uint8_t *data)
{
int wait;
int i;
while (i2c_busy(i2c) == 1);
while (i2c_is_start(i2c) == 1);
/*Setting transfer properties*/
i2c_set_bytes_to_transfer(i2c, size + 1);
i2c_set_7bit_address(i2c, (i2c_addr & 0x7F));
i2c_set_write_transfer_dir(i2c);
i2c_enable_autoend(i2c);
/*start transfer*/
i2c_send_start(i2c);
wait = true;
while (wait) {
if (i2c_transmit_int_status(i2c)) {
wait = false;
}
while (i2c_nack(i2c));
}
i2c_send_data(i2c, reg);
for (i = 0; i < size; i++) {
wait = true;
while (wait) {
if (i2c_transmit_int_status(i2c)) {
wait = false;
}
while (i2c_nack(i2c));
}
i2c_send_data(i2c, data[i]);
}
}
void read_i2c(uint32_t i2c, uint8_t i2c_addr, uint8_t reg, uint8_t size,
uint8_t *data)
{
int wait;
int i;
while (i2c_busy(i2c) == 1);
while (i2c_is_start(i2c) == 1);
/*Setting transfer properties*/
i2c_set_bytes_to_transfer(i2c, 1);
i2c_set_7bit_address(i2c, i2c_addr);
i2c_set_write_transfer_dir(i2c);
i2c_disable_autoend(i2c);
/*start transfer*/
i2c_send_start(i2c);
wait = true;
while (wait) {
if (i2c_transmit_int_status(i2c)) {
wait = false;
}
while (i2c_nack(i2c)); /* Some error */
}
i2c_send_data(i2c, reg);
while (i2c_is_start(i2c) == 1);
/*Setting transfer properties*/
i2c_set_bytes_to_transfer(i2c, size);
i2c_set_7bit_address(i2c, i2c_addr);
i2c_set_read_transfer_dir(i2c);
i2c_enable_autoend(i2c);
/*start transfer*/
i2c_send_start(i2c);
for (i = 0; i < size; i++) {
while (i2c_received_data(i2c) == 0);
data[i] = i2c_get_data(i2c);
}
}
/**@}*/