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Merge branch 'feat/sdio_example_without_intr' into 'master'

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sdio: update the host example to support working with a slave without DAT1

See merge request espressif/esp-idf!7098
This commit is contained in:
Angus Gratton
2020-02-17 07:04:31 +08:00
parent 41bc06b9b9 1f43f33567
commit effefc2329
2 changed files with 31 additions and 8 deletions
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11
examples/peripherals/sdio/host/main/Kconfig.projbuild
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@@ -32,6 +32,17 @@ menu "Example Configuration"
If the example does not work, please try disabling the HS mode. If the example does not work, please try disabling the HS mode.
config EXAMPLE_NO_INTR_LINE
bool "The host is not connected to the interrupt line (DAT1) of slave"
default n
help
If this is set, the host example will not check the interrupt line but poll slave
registers to see whether the slave has interrupts for the host.
Working without the interrupt line may increase the CPU load of the host, and do harm
to the response speed to slave events, though can save 1 GPIO for other purposes in
non-4-bit mode.
choice EXAMPLE_SLAVE choice EXAMPLE_SLAVE
prompt "GPIO to control slave EN in Espressif master-slave board." prompt "GPIO to control slave EN in Espressif master-slave board."
default EXAMPLE_SLAVE_NONE default EXAMPLE_SLAVE_NONE

28
examples/peripherals/sdio/host/main/app_main.c
View File

@@ -293,22 +293,34 @@ void slave_power_on(void)
DMA_ATTR uint8_t rcv_buffer[READ_BUFFER_LEN]; DMA_ATTR uint8_t rcv_buffer[READ_BUFFER_LEN];
static esp_err_t get_intr(essl_handle_t handle, uint32_t* out_raw, uint32_t* out_st)
{
esp_err_t ret = ESP_OK;
#ifndef CONFIG_EXAMPLE_NO_INTR_LINE
ret = essl_wait_int(handle, 0);
if (ret != ESP_OK) {
return ret;
}
#endif
ret = essl_get_intr(handle, out_raw, out_st, TIMEOUT_MAX);
if (ret != ESP_OK) return ret;
ret = essl_clear_intr(handle, *out_raw, TIMEOUT_MAX);
if (ret != ESP_OK) return ret;
ESP_LOGD(TAG, "intr: %08X", *out_raw);
return ESP_OK;
}
//try to get an interrupt from the slave and handle it, return if none. //try to get an interrupt from the slave and handle it, return if none.
esp_err_t process_event(essl_handle_t handle) esp_err_t process_event(essl_handle_t handle)
{ {
esp_err_t ret = essl_wait_int(handle, 0); uint32_t intr_raw, intr_st;
esp_err_t ret = get_intr(handle, &intr_raw, &intr_st);
if (ret == ESP_ERR_TIMEOUT) { if (ret == ESP_ERR_TIMEOUT) {
return ret; return ret;
} }
ESP_ERROR_CHECK(ret); ESP_ERROR_CHECK(ret);
uint32_t intr_raw, intr_st;
ret = essl_get_intr(handle, &intr_raw, &intr_st, TIMEOUT_MAX);
ESP_ERROR_CHECK(ret);
ret = essl_clear_intr(handle, intr_raw, TIMEOUT_MAX);
ESP_ERROR_CHECK(ret);
ESP_LOGD(TAG, "intr: %08X", intr_raw);
for (int i = 0; i < 8; i++) { for (int i = 0; i < 8; i++) {
if (intr_raw & BIT(i)) { if (intr_raw & BIT(i)) {
ESP_LOGI(TAG, "host int: %d", i); ESP_LOGI(TAG, "host int: %d", i);