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Amend gpio driver to work around SoC bug with some pullups/pulldowns in the GPIO peripheral; mark existing function that does not always work as deprecated

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This commit is contained in:
Jeroen Domburg
2016-11-15 10:29:52 +08:00
parent 2bad1dd594
commit 64a2f0ee0b
4 changed files with 194 additions and 24 deletions
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92
components/driver/gpio.c
View File

@@ -69,6 +69,74 @@ const uint32_t GPIO_PIN_MUX_REG[GPIO_PIN_COUNT] = {
GPIO_PIN_REG_39 GPIO_PIN_REG_39
}; };
const gpio_pu_pd_desc_t gpio_pu_pd_desc[GPIO_PIN_COUNT]={
{RTC_IO_TOUCH_PAD1_REG, RTC_IO_TOUCH_PAD1_RUE_M, RTC_IO_TOUCH_PAD1_RDE_M},
{PERIPHS_IO_MUX_U0TXD_U, FUN_PU, FUN_PD},
{RTC_IO_TOUCH_PAD2_REG, RTC_IO_TOUCH_PAD2_RUE_M, RTC_IO_TOUCH_PAD2_RDE_M},
{PERIPHS_IO_MUX_U0RXD_U, FUN_PU, FUN_PD},
{RTC_IO_TOUCH_PAD0_REG, RTC_IO_TOUCH_PAD0_RUE_M, RTC_IO_TOUCH_PAD0_RDE_M},
{PERIPHS_IO_MUX_GPIO5_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_SD_CLK_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_SD_DATA0_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_SD_DATA1_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_SD_DATA2_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_SD_DATA3_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_SD_CMD_U, FUN_PU, FUN_PD},
{RTC_IO_TOUCH_PAD5_REG, RTC_IO_TOUCH_PAD5_RUE_M, RTC_IO_TOUCH_PAD5_RDE_M},
{RTC_IO_TOUCH_PAD4_REG, RTC_IO_TOUCH_PAD4_RUE_M, RTC_IO_TOUCH_PAD4_RDE_M},
{RTC_IO_TOUCH_PAD6_REG, RTC_IO_TOUCH_PAD6_RUE_M, RTC_IO_TOUCH_PAD6_RDE_M},
{RTC_IO_TOUCH_PAD3_REG, RTC_IO_TOUCH_PAD3_RUE_M, RTC_IO_TOUCH_PAD3_RDE_M},
{PERIPHS_IO_MUX_GPIO16_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_GPIO17_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_GPIO18_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_GPIO19_U, FUN_PU, FUN_PD},
{0,0,0},
{PERIPHS_IO_MUX_GPIO21_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_GPIO22_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_GPIO23_U, FUN_PU, FUN_PD},
{0,0,0},
{RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_RUE_M, RTC_IO_PDAC1_RDE_M},
{RTC_IO_PAD_DAC2_REG, RTC_IO_PDAC2_RUE_M, RTC_IO_PDAC2_RDE_M},
{RTC_IO_TOUCH_PAD7_REG, RTC_IO_TOUCH_PAD7_RUE_M, RTC_IO_TOUCH_PAD7_RDE_M},
{0,0,0},
{0,0,0},
{0,0,0},
{0,0,0},
{RTC_IO_XTAL_32K_PAD_REG, RTC_IO_X32P_RUE_M, RTC_IO_X32P_RDE_M},
{RTC_IO_XTAL_32K_PAD_REG, RTC_IO_X32N_RUE_M, RTC_IO_X32N_RDE_M},
{PERIPHS_IO_MUX_GPIO34_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_GPIO35_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_GPIO36_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_GPIO37_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_GPIO38_U, FUN_PU, FUN_PD},
{PERIPHS_IO_MUX_GPIO39_U, FUN_PU, FUN_PD}
};
esp_err_t gpio_pullup_en(gpio_num_t gpio_num) {
GPIO_CHECK(GPIO_IS_VALID_GPIO(gpio_num), "GPIO number error", ESP_ERR_INVALID_ARG);
REG_SET_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pu);
return ESP_OK;
}
esp_err_t gpio_pullup_dis(gpio_num_t gpio_num) {
GPIO_CHECK(GPIO_IS_VALID_GPIO(gpio_num), "GPIO number error", ESP_ERR_INVALID_ARG);
REG_CLR_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pu);
return ESP_OK;
}
esp_err_t gpio_pulldown_en(gpio_num_t gpio_num) {
GPIO_CHECK(GPIO_IS_VALID_GPIO(gpio_num), "GPIO number error", ESP_ERR_INVALID_ARG);
REG_SET_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pd);
return ESP_OK;
}
esp_err_t gpio_pulldown_dis(gpio_num_t gpio_num) {
GPIO_CHECK(GPIO_IS_VALID_GPIO(gpio_num), "GPIO number error", ESP_ERR_INVALID_ARG);
REG_CLR_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pd);
return ESP_OK;
}
esp_err_t gpio_set_intr_type(gpio_num_t gpio_num, gpio_int_type_t intr_type) esp_err_t gpio_set_intr_type(gpio_num_t gpio_num, gpio_int_type_t intr_type)
{ {
GPIO_CHECK(GPIO_IS_VALID_GPIO(gpio_num), "GPIO number error", ESP_ERR_INVALID_ARG); GPIO_CHECK(GPIO_IS_VALID_GPIO(gpio_num), "GPIO number error", ESP_ERR_INVALID_ARG);
@@ -152,20 +220,20 @@ esp_err_t gpio_set_pull_mode(gpio_num_t gpio_num, gpio_pull_mode_t pull)
esp_err_t ret = ESP_OK; esp_err_t ret = ESP_OK;
switch(pull) { switch(pull) {
case GPIO_PULLUP_ONLY: case GPIO_PULLUP_ONLY:
PIN_PULLUP_EN(GPIO_PIN_MUX_REG[gpio_num]); REG_SET_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pu);
PIN_PULLDWN_DIS(GPIO_PIN_MUX_REG[gpio_num]); REG_CLR_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pd);
break; break;
case GPIO_PULLDOWN_ONLY: case GPIO_PULLDOWN_ONLY:
PIN_PULLUP_DIS(GPIO_PIN_MUX_REG[gpio_num]); REG_CLR_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pu);
PIN_PULLDWN_EN(GPIO_PIN_MUX_REG[gpio_num]); REG_SET_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pd);
break; break;
case GPIO_PULLUP_PULLDOWN: case GPIO_PULLUP_PULLDOWN:
PIN_PULLUP_EN(GPIO_PIN_MUX_REG[gpio_num]); REG_SET_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pu);
PIN_PULLDWN_EN(GPIO_PIN_MUX_REG[gpio_num]); REG_SET_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pd);
break; break;
case GPIO_FLOATING: case GPIO_FLOATING:
PIN_PULLUP_DIS(GPIO_PIN_MUX_REG[gpio_num]); REG_CLR_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pu);
PIN_PULLDWN_DIS(GPIO_PIN_MUX_REG[gpio_num]); REG_CLR_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pd);
break; break;
default: default:
ESP_LOGE(GPIO_TAG, "Unknown pull up/down mode,gpio_num=%u,pull=%u",gpio_num,pull); ESP_LOGE(GPIO_TAG, "Unknown pull up/down mode,gpio_num=%u,pull=%u",gpio_num,pull);
@@ -253,15 +321,15 @@ esp_err_t gpio_config(gpio_config_t *pGPIOConfig)
} }
if(pGPIOConfig->pull_up_en) { if(pGPIOConfig->pull_up_en) {
pu_en = 1; pu_en = 1;
PIN_PULLUP_EN(io_reg); REG_SET_BIT(gpio_pu_pd_desc[io_num].reg, gpio_pu_pd_desc[io_num].pd);
} else { } else {
PIN_PULLUP_DIS(io_reg); REG_CLR_BIT(gpio_pu_pd_desc[io_num].reg, gpio_pu_pd_desc[io_num].pd);
} }
if(pGPIOConfig->pull_down_en) { if(pGPIOConfig->pull_down_en) {
pd_en = 1; pd_en = 1;
PIN_PULLDWN_EN(io_reg); REG_SET_BIT(gpio_pu_pd_desc[io_num].reg, gpio_pu_pd_desc[io_num].pd);
} else { } else {
PIN_PULLDWN_DIS(io_reg); REG_CLR_BIT(gpio_pu_pd_desc[io_num].reg, gpio_pu_pd_desc[io_num].pd);
} }
ESP_LOGI(GPIO_TAG, "GPIO[%d]| InputEn: %d| OutputEn: %d| OpenDrain: %d| Pullup: %d| Pulldown: %d| Intr:%d ", io_num, input_en, output_en, od_en, pu_en, pd_en, pGPIOConfig->intr_type); ESP_LOGI(GPIO_TAG, "GPIO[%d]| InputEn: %d| OutputEn: %d| OpenDrain: %d| Pullup: %d| Pulldown: %d| Intr:%d ", io_num, input_en, output_en, od_en, pu_en, pd_en, pGPIOConfig->intr_type);
gpio_set_intr_type(io_num, pGPIOConfig->intr_type); gpio_set_intr_type(io_num, pGPIOConfig->intr_type);

84
components/driver/include/driver/gpio.h
View File

@@ -117,6 +117,29 @@ extern const uint32_t GPIO_PIN_MUX_REG[GPIO_PIN_COUNT];
#define GPIO_IS_VALID_GPIO(gpio_num) ((gpio_num < GPIO_PIN_COUNT && GPIO_PIN_MUX_REG[gpio_num] != 0)) //to decide whether it is a valid GPIO number #define GPIO_IS_VALID_GPIO(gpio_num) ((gpio_num < GPIO_PIN_COUNT && GPIO_PIN_MUX_REG[gpio_num] != 0)) //to decide whether it is a valid GPIO number
#define GPIO_IS_VALID_OUTPUT_GPIO(gpio_num) ((GPIO_IS_VALID_GPIO(gpio_num)) && (gpio_num < 34)) //to decide whether it can be a valid GPIO number of output mode #define GPIO_IS_VALID_OUTPUT_GPIO(gpio_num) ((GPIO_IS_VALID_GPIO(gpio_num)) && (gpio_num < 34)) //to decide whether it can be a valid GPIO number of output mode
typedef struct {
uint32_t reg; /*!< Register to modify to enable or disable pullups or pulldowns */
uint32_t pu; /*!< Bit to set or clear in the above register to enable or disable the pullup, respectively */
uint32_t pd; /*!< Bit to set or clear in the above register to enable or disable the pulldown, respectively */
} gpio_pu_pd_desc_t;
/**
* Per-GPIO pullup/pulldown information
* On the ESP32, some GPIOs need their pullups and pulldowns enabled and disabled in the RTC
* peripheral instead of in the GPIO peripheral. This array documents for every GPIO what bit
* to set or clear.
*
* This array is non-static, so if you need a very quick way of toggling the pull-up/downs, you can just
* do e.g. REG_SET_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pu); inline.
*
* ToDo: Functions using the contents of this array will do a read/modify/write on GPIO as well as RTC
* registers. We may need to look into muxes/locks for other code that accesses these RTC registers when we
* write drivers for the RTC stuff.
*/
extern const gpio_pu_pd_desc_t gpio_pu_pd_desc[GPIO_PIN_COUNT];
typedef enum { typedef enum {
GPIO_NUM_0 = 0, /*!< GPIO0, input and output */ GPIO_NUM_0 = 0, /*!< GPIO0, input and output */
GPIO_NUM_1 = 1, /*!< GPIO1, input and output */ GPIO_NUM_1 = 1, /*!< GPIO1, input and output */
@@ -220,7 +243,7 @@ esp_err_t gpio_config(gpio_config_t *pGPIOConfig);
/** /**
* @brief GPIO set interrupt trigger type * @brief GPIO set interrupt trigger type
* *
* @param gpio_num GPIO number. If you want to set output level of GPIO16, gpio_num should be GPIO_NUM_16 (16); * @param gpio_num GPIO number. If you want to set the trigger type of e.g. of GPIO16, gpio_num should be GPIO_NUM_16 (16);
* @param intr_type Interrupt type, select from gpio_int_type_t * @param intr_type Interrupt type, select from gpio_int_type_t
* *
* @return * @return
@@ -233,7 +256,7 @@ esp_err_t gpio_set_intr_type(gpio_num_t gpio_num, gpio_int_type_t intr_type);
/** /**
* @brief Enable GPIO module interrupt signal * @brief Enable GPIO module interrupt signal
* *
* @param gpio_num GPIO number. If you want to set output level of GPIO16, gpio_num should be GPIO_NUM_16 (16); * @param gpio_num GPIO number. If you want to enable an interrupt on e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
* *
* @return * @return
* - ESP_OK Success * - ESP_OK Success
@@ -245,7 +268,7 @@ esp_err_t gpio_intr_enable(gpio_num_t gpio_num);
/** /**
* @brief Disable GPIO module interrupt signal * @brief Disable GPIO module interrupt signal
* *
* @param gpio_num GPIO number. If you want to set output level of GPIO16, gpio_num should be GPIO_NUM_16 (16); * @param gpio_num GPIO number. If you want to disable the interrupt of e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
* *
* @return * @return
* - ESP_OK success * - ESP_OK success
@@ -257,7 +280,7 @@ esp_err_t gpio_intr_disable(gpio_num_t gpio_num);
/** /**
* @brief GPIO set output level * @brief GPIO set output level
* *
* @param gpio_num GPIO number. If you want to set output level of GPIO16, gpio_num should be GPIO_NUM_16 (16); * @param gpio_num GPIO number. If you want to set the output level of e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
* @param level Output level. 0: low ; 1: high * @param level Output level. 0: low ; 1: high
* *
* @return * @return
@@ -270,7 +293,7 @@ esp_err_t gpio_set_level(gpio_num_t gpio_num, uint32_t level);
/** /**
* @brief GPIO get input level * @brief GPIO get input level
* *
* @param gpio_num GPIO number. If you want to get level of pin GPIO16, gpio_num should be GPIO_NUM_16 (16); * @param gpio_num GPIO number. If you want to get the logic level of e.g. pin GPIO16, gpio_num should be GPIO_NUM_16 (16);
* *
* @return * @return
* - 0 the GPIO input level is 0 * - 0 the GPIO input level is 0
@@ -284,7 +307,7 @@ int gpio_get_level(gpio_num_t gpio_num);
* *
* Configure GPIO direction,such as output_only,input_only,output_and_input * Configure GPIO direction,such as output_only,input_only,output_and_input
* *
* @param gpio_num Configure GPIO pins number, it should be GPIO number. If you want to set direction of GPIO16, gpio_num should be GPIO_NUM_16 (16); * @param gpio_num Configure GPIO pins number, it should be GPIO number. If you want to set direction of e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
* @param mode GPIO direction * @param mode GPIO direction
* *
* @return * @return
@@ -299,7 +322,7 @@ esp_err_t gpio_set_direction(gpio_num_t gpio_num, gpio_mode_t mode);
* *
* User this Function,configure GPIO pull mode,such as pull-up,pull-down * User this Function,configure GPIO pull mode,such as pull-up,pull-down
* *
* @param gpio_num GPIO number. If you want to set pull up or down mode for GPIO16,gpio_num should be GPIO_NUM_16 (16); * @param gpio_num GPIO number. If you want to set pull up or down mode for e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
* @param pull GPIO pull up/down mode. * @param pull GPIO pull up/down mode.
* *
* @return * @return
@@ -354,6 +377,53 @@ esp_err_t gpio_wakeup_disable(gpio_num_t gpio_num);
*/ */
esp_err_t gpio_isr_register(uint32_t gpio_intr_num, void (*fn)(void*), void * arg); esp_err_t gpio_isr_register(uint32_t gpio_intr_num, void (*fn)(void*), void * arg);
/**
* @brief Enable pull-up on GPIO.
*
* @param gpio_num GPIO number
*
* @return
* - ESP_OK Success
* - ESP_ERR_INVALID_ARG Parameter error
*/
esp_err_t gpio_pullup_en(gpio_num_t gpio_num);
/**
* @brief Disable pull-up on GPIO.
*
* @param gpio_num GPIO number
*
* @return
* - ESP_OK Success
* - ESP_ERR_INVALID_ARG Parameter error
*/
esp_err_t gpio_pullup_dis(gpio_num_t gpio_num);
/**
* @brief Enable pull-down on GPIO.
*
* @param gpio_num GPIO number
*
* @return
* - ESP_OK Success
* - ESP_ERR_INVALID_ARG Parameter error
*/
esp_err_t gpio_pulldown_en(gpio_num_t gpio_num);
/**
* @brief Disable pull-down on GPIO.
*
* @param gpio_num GPIO number
*
* @return
* - ESP_OK Success
* - ESP_ERR_INVALID_ARG Parameter error
*/
esp_err_t gpio_pulldown_dis(gpio_num_t gpio_num);
/** /**
* *************** ATTENTION ********************/ * *************** ATTENTION ********************/
/** /**

3
components/esp32/gdbstub.c
View File

@@ -25,6 +25,7 @@
#include "soc/io_mux_reg.h" #include "soc/io_mux_reg.h"
#include "esp_gdbstub.h" #include "esp_gdbstub.h"
#include "driver/gpio.h"
//Length of buffer used to reserve GDB commands. Has to be at least able to fit the G command, which //Length of buffer used to reserve GDB commands. Has to be at least able to fit the G command, which
//implies a minimum size of about 320 bytes. //implies a minimum size of about 320 bytes.
@@ -354,7 +355,7 @@ static int gdbReadCommand() {
void esp_gdbstub_panic_handler(XtExcFrame *frame) { void esp_gdbstub_panic_handler(XtExcFrame *frame) {
dumpHwToRegfile(frame); dumpHwToRegfile(frame);
//Make sure txd/rxd are enabled //Make sure txd/rxd are enabled
PIN_PULLUP_DIS(PERIPHS_IO_MUX_U0TXD_U); gpio_pullup_dis(1);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0RXD_U, FUNC_U0RXD_U0RXD); PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0RXD_U, FUNC_U0RXD_U0RXD);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0TXD_U, FUNC_U0TXD_U0TXD); PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0TXD_U, FUNC_U0TXD_U0TXD);

39
components/esp32/include/soc/io_mux_reg.h
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@@ -34,10 +34,41 @@
#define PIN_INPUT_ENABLE(PIN_NAME) SET_PERI_REG_MASK(PIN_NAME,FUN_IE) #define PIN_INPUT_ENABLE(PIN_NAME) SET_PERI_REG_MASK(PIN_NAME,FUN_IE)
#define PIN_INPUT_DISABLE(PIN_NAME) CLEAR_PERI_REG_MASK(PIN_NAME,FUN_IE) #define PIN_INPUT_DISABLE(PIN_NAME) CLEAR_PERI_REG_MASK(PIN_NAME,FUN_IE)
#define PIN_SET_DRV(PIN_NAME, drv) REG_SET_FIELD(PIN_NAME, FUN_DRV, (drv)); #define PIN_SET_DRV(PIN_NAME, drv) REG_SET_FIELD(PIN_NAME, FUN_DRV, (drv));
#define PIN_PULLUP_DIS(PIN_NAME) REG_CLR_BIT(PIN_NAME, FUN_PU)
#define PIN_PULLUP_EN(PIN_NAME) REG_SET_BIT(PIN_NAME, FUN_PU) /*
#define PIN_PULLDWN_DIS(PIN_NAME) REG_CLR_BIT(PIN_NAME, FUN_PD) * @attention
#define PIN_PULLDWN_EN(PIN_NAME) REG_SET_BIT(PIN_NAME, FUN_PD) * The PIN_PULL[UP|DWN]_[EN|DIS]() functions used to exist as macros in previous SDK versions.
* Unfortunately, however, they do not work for some GPIOs on the ESP32 chip, which needs pullups
* and -downs turned on and off through RTC registers. The functions still exist for compatibility
* with older code, but are marked as deprecated in order to generate a warning.
* Please replace them in this fashion: (make sure to include driver/gpio.h as well)
* PIN_PULLUP_EN(GPIO_PIN_MUX_REG[x]) -> gpio_pullup_en(x)
* PIN_PULLUP_DIS(GPIO_PIN_MUX_REG[x]) -> gpio_pullup_dis(x)
* PIN_PULLDWN_EN(GPIO_PIN_MUX_REG[x]) -> gpio_pulldown_en(x)
* PIN_PULLDWN_DIS(GPIO_PIN_MUX_REG[x]) -> gpio_pulldown_dis(x)
*
*/
static inline void __attribute__ ((deprecated)) PIN_PULLUP_DIS(uint32_t PIN_NAME)
{
REG_CLR_BIT(PIN_NAME, FUN_PU);
}
static inline void __attribute__ ((deprecated)) PIN_PULLUP_EN(uint32_t PIN_NAME)
{
REG_SET_BIT(PIN_NAME, FUN_PU);
}
static inline void __attribute__ ((deprecated)) PIN_PULLDWN_DIS(uint32_t PIN_NAME)
{
REG_CLR_BIT(PIN_NAME, FUN_PD);
}
static inline void __attribute__ ((deprecated)) PIN_PULLDWN_EN(uint32_t PIN_NAME)
{
REG_SET_BIT(PIN_NAME, FUN_PD);
}
#define PIN_FUNC_SELECT(PIN_NAME, FUNC) REG_SET_FIELD(PIN_NAME, MCU_SEL, FUNC) #define PIN_FUNC_SELECT(PIN_NAME, FUNC) REG_SET_FIELD(PIN_NAME, MCU_SEL, FUNC)
#define PIN_FUNC_GPIO 2 #define PIN_FUNC_GPIO 2