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nrf52 i2c: disable peripheral while configuring

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This commit is contained in:
Matias N
2021-01-16 19:36:45 -03:00
committed by Brennan Ashton
parent e1b3374bce
commit 6f3f1c07fb
1 changed files with 7 additions and 3 deletions
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arch/arm/src/nrf52/nrf52_i2c.c
+7 -3
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@@ -568,6 +568,10 @@ static int nrf52_i2c_init(FAR struct nrf52_i2c_priv_s *priv)
int pin = 0; int pin = 0;
int port = 0; int port = 0;
/* Disable TWI interface */
nrf52_i2c_putreg(priv, NRF52_TWIM_ENABLE_OFFSET, TWIM_ENABLE_DIS);
/* Configure SCL and SDA pins */ /* Configure SCL and SDA pins */
nrf52_gpio_config(priv->scl_pin); nrf52_gpio_config(priv->scl_pin);
@@ -593,7 +597,7 @@ static int nrf52_i2c_init(FAR struct nrf52_i2c_priv_s *priv)
/* Enable TWI interface */ /* Enable TWI interface */
nrf52_i2c_putreg(priv, NRF52_TWIS_ENABLE_OFFSET, TWIM_ENABLE_EN); nrf52_i2c_putreg(priv, NRF52_TWIM_ENABLE_OFFSET, TWIM_ENABLE_EN);
#ifndef CONFIG_I2C_POLLED #ifndef CONFIG_I2C_POLLED
/* Enable I2C interrupts */ /* Enable I2C interrupts */
@@ -671,9 +675,9 @@ static int nrf52_i2c_sem_destroy(FAR struct nrf52_i2c_priv_s *priv)
static int nrf52_i2c_deinit(FAR struct nrf52_i2c_priv_s *priv) static int nrf52_i2c_deinit(FAR struct nrf52_i2c_priv_s *priv)
{ {
/* Enable TWI interface */ /* Disable TWI interface */
nrf52_i2c_putreg(priv, TWIM_ENABLE_DIS, NRF52_TWIS_ENABLE_OFFSET); nrf52_i2c_putreg(priv, NRF52_TWIM_ENABLE_OFFSET, TWIM_ENABLE_DIS);
/* Unconfigure GPIO pins */ /* Unconfigure GPIO pins */