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add multi-expander

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This commit is contained in:
Philippe G
2021-12-01 19:15:29 -08:00
parent f655244039
commit 2a9d87b6c5
3 changed files with 26 additions and 19 deletions
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37
components/services/accessors.c
View File

@@ -485,24 +485,31 @@ const i2c_config_t * config_i2c_get(int * i2c_port) {
/****************************************************************************************
* Get IO expander config structure from config string
*/
const gpio_exp_config_t* config_gpio_exp_get(void) {
char *nvs_item, *p;
static gpio_exp_config_t config = {
.intr = -1,
.count = 16,
.base = GPIO_NUM_MAX,
};
config.phy.port = i2c_system_port;
const gpio_exp_config_t* config_gpio_exp_get(int index) {
char *nvs_item, *item, *p;
static gpio_exp_config_t config;
// re-initialize config every time
memset(&config, 0, sizeof(config));
config.intr = -1; config.count = 16; config.base = GPIO_NUM_MAX; config.phy.port = i2c_system_port;
nvs_item = config_alloc_get(NVS_TYPE_STR, "gpio_exp_config");
if (!nvs_item || !*nvs_item) return NULL;
if ((p = strcasestr(nvs_item, "addr")) != NULL) config.phy.addr = atoi(strchr(p, '=') + 1);
if ((p = strcasestr(nvs_item, "intr")) != NULL) config.intr = atoi(strchr(p, '=') + 1);
if ((p = strcasestr(nvs_item, "base")) != NULL) config.base = atoi(strchr(p, '=') + 1);
if ((p = strcasestr(nvs_item, "count")) != NULL) config.count = atoi(strchr(p, '=') + 1);
if ((p = strcasestr(nvs_item, "model")) != NULL) sscanf(p, "%*[^=]=%31[^,]", config.model);
if ((p = strcasestr(nvs_item, "port")) != NULL) {
// search index items
for (item = strtok(nvs_item, ";"); index && item; index--) {
if ((item = strtok(NULL, ";")) == NULL) {
free(nvs_item);
return NULL;
}
}
if ((p = strcasestr(item, "addr")) != NULL) config.phy.addr = atoi(strchr(p, '=') + 1);
if ((p = strcasestr(item, "intr")) != NULL) config.intr = atoi(strchr(p, '=') + 1);
if ((p = strcasestr(item, "base")) != NULL) config.base = atoi(strchr(p, '=') + 1);
if ((p = strcasestr(item, "count")) != NULL) config.count = atoi(strchr(p, '=') + 1);
if ((p = strcasestr(item, "model")) != NULL) sscanf(p, "%*[^=]=%31[^,]", config.model);
if ((p = strcasestr(item, "port")) != NULL) {
char port[8] = "";
sscanf(p, "%*[^=]=%7[^,]", port);
if (strcasestr(port, "dac")) config.phy.port = 0;

2
components/services/accessors.h
View File

@@ -95,7 +95,7 @@ esp_err_t config_i2s_set(const i2s_platform_config_t * config, const char *
esp_err_t config_spi_set(const spi_bus_config_t * config, int host, int dc);
const i2c_config_t * config_i2c_get(int * i2c_port);
const spi_bus_config_t * config_spi_get(spi_host_device_t * spi_host);
const gpio_exp_config_t * config_gpio_exp_get(void);
const gpio_exp_config_t * config_gpio_exp_get(int index);
void parse_set_GPIO(void (*cb)(int gpio, char *value));
const i2s_platform_config_t * config_dac_get();
const i2s_platform_config_t * config_spdif_get( );

6
components/services/services.c
View File

@@ -70,9 +70,9 @@ void services_init(void) {
}
#endif
// create GPIO expander
const gpio_exp_config_t * gpio_exp_config = config_gpio_exp_get();
if (gpio_exp_config) gpio_exp_create(gpio_exp_config);
// create GPIO expanders
const gpio_exp_config_t* gpio_exp_config;
for (int count = 0; (gpio_exp_config = config_gpio_exp_get(count)); count++) gpio_exp_create(gpio_exp_config);
// set potential power GPIO (a GPIO-powered expander might be an issue)
parse_set_GPIO(set_power_gpio);