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I2C: Fixes/improvements from last massive I2C commits

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This commit is contained in:
Gregory Nutt
2016-02-02 07:13:03 -06:00
parent 4304405bba
commit 009e9f76cb
9 changed files with 99 additions and 65 deletions
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drivers/mtd/at24xx.c
+20 -12
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@@ -203,15 +203,19 @@ static struct at24c_dev_s g_at24c;
static int at24c_i2c_write(FAR struct at24c_dev_s *priv, uint16_t at24addr,
FAR const uint8_t *buffer, int buflen)
{
struct i2c_config_s config;
struct i2c_msg_s msg;
/* Set up the I2C configuration */
/* Setup for the transfer */
config.frequency = CONFIG_AT24XX_FREQUENCY;
config.address = at24addr;
config.addrlen = 7;
msg.frequency = CONFIG_AT24XX_FREQUENCY,
msg.addr = at24addr;
msg.flags = 0;
msg.buffer = (FAR uint8_t *)buffer; /* Override const */
msg.length = buflen;
return i2c_write(priv->dev, &config, buffer, buflen);
/* Then perform the transfer. */
return I2C_TRANSFER(priv->dev, &msg, 1);
}
/****************************************************************************
@@ -225,15 +229,19 @@ static int at24c_i2c_write(FAR struct at24c_dev_s *priv, uint16_t at24addr,
static int at24c_i2c_read(FAR struct at24c_dev_s *priv, uint16_t at24addr,
FAR uint8_t *buffer, int buflen)
{
struct i2c_config_s config;
struct i2c_msg_s msg;
/* Set up the I2C configuration */
/* Setup for the transfer */
config.frequency = CONFIG_AT24XX_FREQUENCY;
config.address = at24addr;
config.addrlen = 7;
msg.frequency = CONFIG_AT24XX_FREQUENCY,
msg.addr = at24addr,
msg.flags = I2C_M_READ;
msg.buffer = buffer;
msg.length = buflen;
return i2c_read(priv->dev, &config, buffer, buflen);
/* Then perform the transfer. */
return I2C_TRANSFER(priv->dev, &msg, 1);
}
/************************************************************************************