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1. modify i2c_set_pin function

Browse Source 
2. update example comments and other minor changes
3. rename API:  i2c_cmd_link_create/i2c_cmd_link_delete (+4 squashed commits)

Squashed commits:
[2e0ac3e] 1. coding style: add one space after condition key words.
2. modify i2c.h, use gpio_num_t instead of int, improve comments of return values
3. add i2c index in index.rst
4. add readme for i2c example
[4991d92] update i2c.doc
[88b672e] driver: i2c

1. add mux and spin lock to run in a thread-safe way.
2. modify example code
[4eb15fe] driver: i2c code

1. add i2c master code
2. add i2c slave code
3. add i2c example code
4. add DRAM_ATTR for I2C array
This commit is contained in:
Wangjialin
2016-12-16 23:41:04 +08:00
parent 370cf5493f
commit 9c7cc86793
10 changed files with 1983 additions and 3 deletions
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6
components/esp32/include/soc/i2c_struct.h
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@@ -16,7 +16,7 @@
typedef volatile struct {
union {
struct {
uint32_t scl_low_period:14; /*This register is used to configure the low level width of SCL clock.*/
uint32_t period:14; /*This register is used to configure the low level width of SCL clock.*/
uint32_t reserved14: 18;
};
uint32_t val;
@@ -58,7 +58,7 @@ typedef volatile struct {
} status_reg;
union {
struct {
uint32_t tout: 20; /*This register is used to configure the max clock number of receiving a data.*/
uint32_t tout: 20; /*This register is used to configure the max clock number of receiving a data, unit: APB clock cycle.*/
uint32_t reserved20:12;
};
uint32_t val;
@@ -282,7 +282,7 @@ typedef volatile struct {
uint32_t reserved_f4;
uint32_t date; /**/
uint32_t reserved_fc;
uint32_t fifo_start_addr; /*This the start address for ram when use apb nonfifo access.*/
uint32_t ram_data[32]; /*This the start address for ram when use apb nonfifo access.*/
} i2c_dev_t;
extern i2c_dev_t I2C0;
extern i2c_dev_t I2C1;