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Modified i2c peripheral configuration

This commit is contained in:
Joy 2021-09-22 17:54:17 +08:00 committed by Fabio Utzig
parent f3c9ee772a
commit 9741167391
2 changed files with 55 additions and 37 deletions
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58
os/hal/ports/WB32/LLD/I2Cv1/hal_i2c_lld.c
View File

@ -106,25 +106,51 @@ static void i2c_lld_abort_operation(I2CDriver *i2cp) {
* @notapi
*/
static void i2c_lld_configuration(I2CDriver *i2cp) {
I2C_TypeDef *dp = i2cp->i2c;
const I2CConfig *cfg = i2cp->config;
I2C_TypeDef *dp = i2cp->i2c;
float tclk, tval;
uint32_t con_reg;
i2copmode_t opmode = i2cp->config->op_mode;
int32_t clock_speed = i2cp->config->clock_speed;
osalDbgCheck((i2cp != NULL) && (dp != NULL) && (cfg != NULL));
osalDbgCheck((i2cp != NULL) &&
(clock_speed > 0) &&
(clock_speed <= 400000));
dp->INTR_MASK |= (uint16_t)cfg->i2c_it;
con_reg = I2C_CON_SLAVE_DISABLE | I2C_CON_RESTART_EN | I2C_CON_MASTER_MODE;
dp->CON = (uint32_t)cfg->op_mode;
dp->TX_TL = 0;
dp->RX_TL = 0;
dp->TAR = (uint32_t)cfg->target_address;
switch (opmode) {
case OPMODE_I2C:
break;
case OPMODE_SMBUS_DEVICE:
osalDbgAssert(false, "SMBUS_DEVICE mode is not supported");
break;
case OPMODE_SMBUS_HOST:
osalDbgAssert(false, "SMBUS_HOST mode is not supported");
break;
}
dp->TX_TL = (uint8_t)cfg->tx_fifo_threshold;
dp->RX_TL = (uint8_t)cfg->rx_fifo_threshold;
dp->FS_SPKLEN = (uint32_t)(WB32_PCLK2 / 1000000 * 0.02); // 20ns
dp->SDA_HOLD = (uint32_t)(WB32_PCLK2 / 1000000 * 0.31); // 310ns
tclk = (float)1000000 / (clock_speed << 1);
tval = (float)WB32_PCLK2 / 1000000 * tclk;
dp->SS_SCL_HCNT = (uint32_t)cfg->ss_scl_hcnt;
dp->SS_SCL_LCNT = (uint32_t)cfg->ss_scl_lcnt;
dp->FS_SPKLEN = (uint32_t)cfg->fs_spklen;
dp->SDA_SETUP = (uint32_t)cfg->sda_setup;
dp->SDA_HOLD = (uint32_t)cfg->sda_hold;
if (clock_speed <= 100000) {
con_reg |= I2C_CON_SPEED_STANDARD;
dp->SDA_SETUP = (uint32_t)(WB32_PCLK2 / 1000000 * 0.25); // 250ns
dp->SS_SCL_HCNT = (uint32_t)(tval - 7 - dp->FS_SPKLEN);
dp->SS_SCL_LCNT = (uint32_t)(tval - 1);
}
else if (clock_speed <= 400000) {
con_reg |= I2C_CON_SPEED_FAST;
dp->SDA_SETUP = (uint32_t)(WB32_PCLK2 / 1000000 * 0.15); // 150ns
dp->FS_SCL_HCNT = (uint32_t)(tval - 7 - dp->FS_SPKLEN);
dp->FS_SCL_LCNT = (uint32_t)(tval - 1);
}
dp->CON = con_reg;
}
/**
@ -427,7 +453,8 @@ msg_t i2c_lld_master_receive_timeout(I2CDriver *i2cp, i2caddr_t addr,
/* Disable all I2C interrupt.*/
dp->INTR_MASK &= ~(0xFFFF);
/* Enable the selected I2C interrupt.*/
dp->INTR_MASK |= (i2cp->config->i2c_it);
dp->INTR_MASK |= I2C_INTR_TX_EMPTY | I2C_INTR_TX_ABRT |
I2C_INTR_STOP_DET | I2C_INTR_RX_FULL;
/* Waits for the operation completion or a timeout.*/
msg = osalThreadSuspendTimeoutS(&i2cp->thread, timeout);
@ -502,7 +529,8 @@ msg_t i2c_lld_master_transmit_timeout(I2CDriver *i2cp, i2caddr_t addr,
/* Disable all I2C interrupt.*/
dp->INTR_MASK &= ~(0xFFFF);
/* Enable the selected I2C interrupt.*/
dp->INTR_MASK |= (i2cp->config->i2c_it);
dp->INTR_MASK |= I2C_INTR_TX_EMPTY | I2C_INTR_TX_ABRT |
I2C_INTR_STOP_DET | I2C_INTR_RX_FULL;
/* Waits for the operation completion or a timeout.*/
msg = osalThreadSuspendTimeoutS(&i2cp->thread, timeout);

34
os/hal/ports/WB32/LLD/I2Cv1/hal_i2c_lld.h
View File

@ -136,32 +136,22 @@ typedef struct {
volatile uint32_t rx_cmd_len;
uint32_t tx_abrt_source;
} i2c_xfer_info_t;
typedef enum {
OPMODE_I2C = 1,
OPMODE_SMBUS_DEVICE = 2,
OPMODE_SMBUS_HOST = 3,
} i2copmode_t;
/**
* @brief Type of I2C driver configuration structure.
*/
typedef struct {
/* End of the mandatory fields.*/
/* specifies the I2C interrupt source.*/
uint16_t i2c_it;
/* Specifies the I2C mode.*/
uint32_t op_mode;
/* In host mode set the slave address */
uint32_t target_address;
/* The Transmit FIFO threshold to set.*/
uint8_t tx_fifo_threshold;
/* The Receive FIFO threshold to set.*/
uint8_t rx_fifo_threshold;
/* tHIGH = (ss_scl_hcnt + FS_SPKLEN + 7) / PCLK2.*/
uint32_t ss_scl_hcnt;
/* tLOW = (ss_scl_lcnt + 1) / PCLK2.*/
uint32_t ss_scl_lcnt;
/* fs_spklen / PCLK2.*/
uint32_t fs_spklen;
/* tSU;DAT = sda_setup / PCLK2.*/
uint32_t sda_setup;
/* tHD;DAT = sda_hold / PCLK2.*/
uint32_t sda_hold;
/* End of the mandatory fields.*/
i2copmode_t op_mode; /**< @brief Specifies the I2C mode. */
uint32_t clock_speed; /**< @brief Specifies the clock frequency.
@note Must be set to a value lower
than 400kHz. */
} I2CConfig;
/**