RIOT-OS/RIOT
RIOT-OS/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2024-12-29 04:50:03 +01:00
Code Releases Activity

frdm-k22f: Update I2C configuration

Browse Source
This commit is contained in:
Joakim Nohlgård 2018-05-29 21:33:36 +02:00 committed by dylad
parent 175f398b58
commit 251c4c109e
1 changed files with 13 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
boards/frdm-k22f/include/periph_conf.h
View File

@ -237,34 +237,19 @@ static const spi_conf_t spi_config[] = {
* @name I2C configuration
* @{
*/
#define I2C_NUMOF (1U)
#define I2C_0_EN 1
/* Low (10 kHz): MUL = 2, SCL divider = 1536, total: 3072 */
#define KINETIS_I2C_F_ICR_LOW (0x36)
#define KINETIS_I2C_F_MULT_LOW (1)
/* Normal (100 kHz): MUL = 2, SCL divider = 160, total: 320 */
#define KINETIS_I2C_F_ICR_NORMAL (0x1D)
#define KINETIS_I2C_F_MULT_NORMAL (1)
/* Fast (400 kHz): MUL = 1, SCL divider = 80, total: 80 */
#define KINETIS_I2C_F_ICR_FAST (0x14)
#define KINETIS_I2C_F_MULT_FAST (0)
/* Fast plus (1000 kHz): MUL = 1, SCL divider = 30, total: 30 */
#define KINETIS_I2C_F_ICR_FAST_PLUS (0x05)
#define KINETIS_I2C_F_MULT_FAST_PLUS (0)
/* I2C 0 device configuration */
#define I2C_0_DEV I2C0
#define I2C_0_CLKEN() (SIM->SCGC4 |= (SIM_SCGC4_I2C0_MASK))
#define I2C_0_CLKDIS() (SIM->SCGC4 &= ~(SIM_SCGC4_I2C0_MASK))
#define I2C_0_IRQ I2C0_IRQn
#define I2C_0_IRQ_HANDLER isr_i2c0
/* I2C 0 pin configuration */
#define I2C_0_PORT PORTB
#define I2C_0_PORT_CLKEN() (SIM->SCGC5 |= (SIM_SCGC5_PORTB_MASK))
#define I2C_0_PIN_AF 2
#define I2C_0_SDA_PIN 3
#define I2C_0_SCL_PIN 2
#define I2C_0_PORT_CFG (PORT_PCR_MUX(I2C_0_PIN_AF) | PORT_PCR_ODE_MASK)
static const i2c_conf_t i2c_config[] = {
{
.i2c = I2C0,
.scl_pin = GPIO_PIN(PORT_B, 2),
.sda_pin = GPIO_PIN(PORT_B, 3),
.freq = CLOCK_BUSCLOCK,
.speed = I2C_SPEED_FAST,
.irqn = I2C0_IRQn,
.scl_pcr = (PORT_PCR_MUX(2) | PORT_PCR_ODE_MASK),
.sda_pcr = (PORT_PCR_MUX(2) | PORT_PCR_ODE_MASK),
},
};
#define I2C_NUMOF (sizeof(i2c_config) / sizeof(i2c_config[0]))
/** @} */
#ifdef __cplusplus