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Dedicated GPIO: add examples implementing software I2C, UART and SPI on RISC-V targets.

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Use dedicated GPIOs in examples to show how to emulate a UART, I2C and SPI bus.
(Using assembly and C)
This commit is contained in:
Omar Chebib
2022-11-02 19:31:18 +08:00
parent dcaa753f37
commit 623bffaab8
37 changed files with 1928 additions and 7 deletions
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components/driver/include/driver/dedic_gpio.h
+23 -4
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@@ -52,13 +52,13 @@ typedef struct {
esp_err_t dedic_gpio_new_bundle(const dedic_gpio_bundle_config_t *config, dedic_gpio_bundle_handle_t *ret_bundle);
/**
* @brief Destory GPIO bundle
* @brief Destroy GPIO bundle
*
* @param[in] bundle Handle of GPIO bundle that returned from "dedic_gpio_new_bundle"
* @return
* - ESP_OK: Destory GPIO bundle successfully
* - ESP_ERR_INVALID_ARG: Destory GPIO bundle failed because of invalid argument
* - ESP_FAIL: Destory GPIO bundle failed because of other error
* - ESP_OK: Destroy GPIO bundle successfully
* - ESP_ERR_INVALID_ARG: Destroy GPIO bundle failed because of invalid argument
* - ESP_FAIL: Destroy GPIO bundle failed because of other error
*/
esp_err_t dedic_gpio_del_bundle(dedic_gpio_bundle_handle_t bundle);
@@ -81,6 +81,25 @@ esp_err_t dedic_gpio_get_out_mask(dedic_gpio_bundle_handle_t bundle, uint32_t *m
esp_err_t dedic_gpio_get_in_mask(dedic_gpio_bundle_handle_t bundle, uint32_t *mask);
/**@}*/
/**@{*/
/**
* @brief Get the channel offset of the GPIO bundle
*
* A GPIO bundle maps the GPIOS of a particular direction to a consecutive set of channels within
* a particular GPIO bank of a particular CPU. This function returns the offset to
* the bundle's first channel of a particular direction within the bank.
*
* @param[in] bundle Handle of GPIO bundle that returned from "dedic_gpio_new_bundle"
* @param[out] offset Offset value to the first channel of a specific direction (in or out)
* @return
* - ESP_OK: Get channel offset successfully
* - ESP_ERR_INVALID_ARG: Get channel offset failed because of invalid argument
* - ESP_FAIL: Get channel offset failed because of other error
*/
esp_err_t dedic_gpio_get_out_offset(dedic_gpio_bundle_handle_t bundle, uint32_t *offset);
esp_err_t dedic_gpio_get_in_offset(dedic_gpio_bundle_handle_t bundle, uint32_t *offset);
/**@}*/
/**
* @brief Write value to GPIO bundle
*