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Add support for AW9523 port expander

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This commit is contained in:
Stefan Krupop
2024-07-25 01:13:14 +02:00
parent 40a698e2f1
commit a2351ba0d5
1 changed files with 25 additions and 0 deletions
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25
components/services/gpio_exp.c
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@@ -83,6 +83,10 @@ static void mcp23s17_set_direction(gpio_exp_t* self);
static uint32_t mcp23s17_read(gpio_exp_t* self); static uint32_t mcp23s17_read(gpio_exp_t* self);
static void mcp23s17_write(gpio_exp_t* self); static void mcp23s17_write(gpio_exp_t* self);
static void aw9523_set_direction(gpio_exp_t* self);
static uint32_t aw9523_read(gpio_exp_t* self);
static void aw9523_write(gpio_exp_t* self);
static void service_handler(void *arg); static void service_handler(void *arg);
static void debounce_handler( TimerHandle_t xTimer ); static void debounce_handler( TimerHandle_t xTimer );
@@ -130,6 +134,11 @@ static const struct gpio_exp_model_s {
.set_pull_mode = mcp23s17_set_pull_mode, .set_pull_mode = mcp23s17_set_pull_mode,
.read = mcp23s17_read, .read = mcp23s17_read,
.write = mcp23s17_write, }, .write = mcp23s17_write, },
{ .model = "aw9523",
.trigger = GPIO_INTR_LOW_LEVEL,
.set_direction = aw9523_set_direction,
.read = aw9523_read,
.write = aw9523_write, },
}; };
static EXT_RAM_ATTR uint8_t n_expanders; static EXT_RAM_ATTR uint8_t n_expanders;
@@ -671,6 +680,22 @@ static void mcp23s17_write(gpio_exp_t* self) {
spi_write(self->spi_handle, self->phy.addr, 0x12, self->shadow, 2); spi_write(self->spi_handle, self->phy.addr, 0x12, self->shadow, 2);
} }
/****************************************************************************************
* AW9523 family : direction, read and write
*/
static void aw9523_set_direction(gpio_exp_t* self) {
i2c_write(self->phy.port, self->phy.addr, 0x04, self->r_mask, 2);
i2c_write(self->phy.port, self->phy.addr, 0x06, ~self->r_mask, 2);
}
static uint32_t aw9523_read(gpio_exp_t* self) {
return i2c_read(self->phy.port, self->phy.addr, 0x00, 2);
}
static void aw9523_write(gpio_exp_t* self) {
i2c_write(self->phy.port, self->phy.addr, 0x02, self->shadow, 2);
}
/*************************************************************************************** /***************************************************************************************
I2C low level I2C low level
***************************************************************************************/ ***************************************************************************************/