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Make I2C work reliably with interrupts

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Thanks @marcmerlin and @MartyMacGyver
This commit is contained in:
me-no-dev 2017-03-26 00:27:27 +02:00
parent a07f9842af
commit 90322ae7eb
1 changed files with 6 additions and 4 deletions
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10
cores/esp32/esp32-hal-i2c.c
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@ -27,6 +27,8 @@
#define I2C_SCL_IDX(p) ((p==0)?I2CEXT0_SCL_OUT_IDX:((p==1)?I2CEXT1_SCL_OUT_IDX:0))
#define I2C_SDA_IDX(p) ((p==0)?I2CEXT0_SDA_OUT_IDX:((p==1)?I2CEXT1_SDA_OUT_IDX:0))
#define DR_REG_I2C_EXT_BASE_FIXED 0x60013000
#define DR_REG_I2C1_EXT_BASE_FIXED 0x60027000
struct i2c_struct_t {
i2c_dev_t * dev;
@ -49,16 +51,16 @@ enum {
#define I2C_MUTEX_UNLOCK()
static i2c_t _i2c_bus_array[2] = {
{(volatile i2c_dev_t *)(DR_REG_I2C_EXT_BASE), 0},
{(volatile i2c_dev_t *)(DR_REG_I2C1_EXT_BASE), 1}
{(volatile i2c_dev_t *)(DR_REG_I2C_EXT_BASE_FIXED), 0},
{(volatile i2c_dev_t *)(DR_REG_I2C1_EXT_BASE_FIXED), 1}
};
#else
#define I2C_MUTEX_LOCK() do {} while (xSemaphoreTake(i2c->lock, portMAX_DELAY) != pdPASS)
#define I2C_MUTEX_UNLOCK() xSemaphoreGive(i2c->lock)
static i2c_t _i2c_bus_array[2] = {
{(volatile i2c_dev_t *)(DR_REG_I2C_EXT_BASE), NULL, 0},
{(volatile i2c_dev_t *)(DR_REG_I2C1_EXT_BASE), NULL, 1}
{(volatile i2c_dev_t *)(DR_REG_I2C_EXT_BASE_FIXED), NULL, 0},
{(volatile i2c_dev_t *)(DR_REG_I2C1_EXT_BASE_FIXED), NULL, 1}
};
#endif