From 3c2258956b4b9ef6213bdac3b92830ca019e9645 Mon Sep 17 00:00:00 2001 From: tkuyucu Date: Wed, 18 Dec 2013 15:04:16 +0100 Subject: [PATCH] AnalogIn, Interrupts, and I2C are added. --- .../TARGET_nRF51822/PeripheralNames.h | 25 +- .../TARGET_nRF51822/analogin_api.c | 79 +++++ .../TARGET_NORDIC/TARGET_nRF51822/device.h | 6 +- .../TARGET_nRF51822/gpio_irq_api.c | 118 +++++++ .../TARGET_NORDIC/TARGET_nRF51822/i2c_api.c | 305 ++++++++++++++++++ .../TARGET_NORDIC/TARGET_nRF51822/objects.h | 26 +- 6 files changed, 516 insertions(+), 43 deletions(-) create mode 100644 libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/analogin_api.c create mode 100644 libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/gpio_irq_api.c create mode 100644 libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/i2c_api.c diff --git a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/PeripheralNames.h b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/PeripheralNames.h index 467cd3b70e..fb5806876b 100644 --- a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/PeripheralNames.h +++ b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/PeripheralNames.h @@ -44,32 +44,15 @@ typedef enum { PWM_4 } PWMName; -/* typedef enum { - I2C_0 = (int)I2C0_BASE, - I2C_1 = (int)I2C1_BASE, + I2C_0 = (int)NRF_TWI0_BASE, + I2C_1 = (int)NRF_TWI1_BASE } I2CName; - -#define CHANNELS_A_SHIFT 5 typedef enum { - ADC0_SE0 = 0, - ADC0_SE3 = 3, - ADC0_SE4a = (1 << CHANNELS_A_SHIFT) | (4), - ADC0_SE4b = 4, - ADC0_SE5b = 5, - ADC0_SE6b = 6, - ADC0_SE7a = (1 << CHANNELS_A_SHIFT) | (7), - ADC0_SE7b = 7, - ADC0_SE8 = 8, - ADC0_SE9 = 9, - ADC0_SE11 = 11, - ADC0_SE12 = 12, - ADC0_SE13 = 13, - ADC0_SE14 = 14, - ADC0_SE15 = 15, - ADC0_SE23 = 23 + ADC0_0 = (int)NRF_ADC_BASE } ADCName; +/* typedef enum { DAC_0 = 0 diff --git a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/analogin_api.c b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/analogin_api.c new file mode 100644 index 0000000000..9277305a59 --- /dev/null +++ b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/analogin_api.c @@ -0,0 +1,79 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "analogin_api.h" +#include "cmsis.h" +#include "pinmap.h" +#include "error.h" + +#define ANALOGIN_MEDIAN_FILTER 1 + +#define ADC_10BIT_RANGE 0x3FF + +static inline int div_round_up(int x, int y) { + return (x + (y - 1)) / y; +} + +static const PinMap PinMap_ADC[] = { + // {p26, ADC0_0, 1}, + // {p27, ADC0_0, 2}, + {p1, ADC0_0, 4}, + {p2, ADC0_0, 8}, + {p3, ADC0_0, 16}, + {p4, ADC0_0, 32}, + {p5, ADC0_0, 64}, + {p6, ADC0_0, 128}, + {NC , NC , 0} +}; + +#define ADC_RANGE ADC_10BIT_RANGE + +void analogin_init(analogin_t *obj, PinName pin) { + obj->adc = (NRF_ADC_Type *) ((ADCName)pinmap_peripheral(pin, PinMap_ADC)); + if (obj->adc == (ADCName)NC) { + error("ADC pin mapping failed"); + } + int analogInputPin=0; + PinMap *map = PinMap_ADC; + while (map->pin != NC) { + if (map->pin == pin){ + analogInputPin = map->function; + break; + } + map++; + } + + NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled; + NRF_ADC->CONFIG = (ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos) | + (ADC_CONFIG_INPSEL_AnalogInputOneThirdPrescaling<< ADC_CONFIG_INPSEL_Pos) | + (ADC_CONFIG_REFSEL_SupplyOneThirdPrescaling << ADC_CONFIG_REFSEL_Pos) | + (analogInputPin << ADC_CONFIG_PSEL_Pos) | + (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos); +} + + +uint16_t analogin_read_u16(analogin_t *obj) { + NRF_ADC->TASKS_START = 1; + while (((NRF_ADC->BUSY & ADC_BUSY_BUSY_Msk) >> ADC_BUSY_BUSY_Pos) == ADC_BUSY_BUSY_Busy) + { + } + + return (uint16_t)NRF_ADC->RESULT; // 10 bit +} + +float analogin_read(analogin_t *obj) { + uint16_t value = analogin_read_u16(obj); + return (float)value * (1.0f / (float)ADC_RANGE); +} diff --git a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/device.h b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/device.h index a1b7bcae5c..6f4a71f842 100644 --- a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/device.h +++ b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/device.h @@ -20,14 +20,14 @@ #define DEVICE_PORTOUT 1 #define DEVICE_PORTINOUT 1 -#define DEVICE_INTERRUPTIN 0 +#define DEVICE_INTERRUPTIN 1 -#define DEVICE_ANALOGIN 0 +#define DEVICE_ANALOGIN 1 #define DEVICE_ANALOGOUT 0 #define DEVICE_SERIAL 1 -#define DEVICE_I2C 0 +#define DEVICE_I2C 1 #define DEVICE_I2CSLAVE 0 #define DEVICE_SPI 1 diff --git a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/gpio_irq_api.c b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/gpio_irq_api.c new file mode 100644 index 0000000000..3fe31e37d2 --- /dev/null +++ b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/gpio_irq_api.c @@ -0,0 +1,118 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include +#include "cmsis.h" + +#include "gpio_irq_api.h" +#include "error.h" + +#define CHANNEL_NUM 31 + +static uint32_t channel_ids[CHANNEL_NUM] = {0}; //each pin will be given an id, if id is 0 the pin can be ignored. +static uint8_t channel_enabled[CHANNEL_NUM] = {0}; +static uint32_t portRISE= 0; +static uint32_t portFALL= 0; +static gpio_irq_handler irq_handler; + +volatile uint32_t oldPortValue; +static int test=0; + +void GPIOTE_IRQHandler(void) +{ + volatile uint32_t newVal = NRF_GPIO->IN; + if ((NRF_GPIOTE->EVENTS_PORT != 0) && ((NRF_GPIOTE->INTENSET & GPIOTE_INTENSET_PORT_Msk) != 0)){ + //NRF_GPIOTE->INTENSET &= ~(GPIOTE_INTENSET_PORT_Enabled<EVENTS_PORT = 0; + for(uint8_t i=0;i<31;i++) + { + if(channel_ids[i]>0){ + if((portRISE>>i)&1){ + if(((newVal>>i)&1) && ((oldPortValue>>i)&1)==0 ){// + if(channel_enabled[i]){ + irq_handler(channel_ids[i], IRQ_RISE); + } + NRF_GPIO->PIN_CNF[i] &= ~(GPIO_PIN_CNF_SENSE_Msk); + NRF_GPIO->PIN_CNF[i] |= (GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos) ; + } + else if(((newVal>>i)&1)==0 && ((NRF_GPIO->PIN_CNF[i] >>GPIO_PIN_CNF_SENSE_Pos)&GPIO_PIN_CNF_SENSE_Low) == GPIO_PIN_CNF_SENSE_Low){ + NRF_GPIO->PIN_CNF[i] &= ~(GPIO_PIN_CNF_SENSE_Msk); + NRF_GPIO->PIN_CNF[i] |= (GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos) ; + } + } + else if((portFALL>>i)&1){ + if(((oldPortValue>>i)&1) && ((newVal>>i)&1)==0 ){ + if(channel_enabled[i]){ + irq_handler(channel_ids[i], IRQ_FALL); + } + NRF_GPIO->PIN_CNF[i] &= ~(GPIO_PIN_CNF_SENSE_Msk); + NRF_GPIO->PIN_CNF[i] |= (GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos) ; + } + else if(((newVal>>i)&1) && ((NRF_GPIO->PIN_CNF[i] >>GPIO_PIN_CNF_SENSE_Pos)&GPIO_PIN_CNF_SENSE_Low) != GPIO_PIN_CNF_SENSE_Low){ + NRF_GPIO->PIN_CNF[i] &= ~(GPIO_PIN_CNF_SENSE_Msk); + NRF_GPIO->PIN_CNF[i] |= (GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos) ; + } + } + } + } + oldPortValue = newVal; + //NRF_GPIOTE->INTENSET = GPIOTE_INTENSET_PORT_Enabled<ch = pin; + + oldPortValue = NRF_GPIO->IN; + + //NVIC_DisableIRQ(GPIOTE_IRQn); + NRF_GPIOTE->EVENTS_PORT = 0; + NRF_GPIOTE->INTENSET = GPIOTE_INTENSET_PORT_Set<ch] = 0; +} + +void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable) { + portRISE &=~(1<ch); + portFALL &=~(1<ch); + if(enable){ + if(event == IRQ_RISE){ + portRISE |=(1<ch); + NRF_GPIO->PIN_CNF[obj->ch] &= ~(GPIO_PIN_CNF_SENSE_Msk);// | GPIO_PIN_CNF_PULL_Msk); + NRF_GPIO->PIN_CNF[obj->ch] |= (GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos) ;//| (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos); + } + else if(event == IRQ_FALL){ + portFALL |=(1<ch); + NRF_GPIO->PIN_CNF[obj->ch] &= ~(GPIO_PIN_CNF_SENSE_Msk );//| GPIO_PIN_CNF_PULL_Msk); + NRF_GPIO->PIN_CNF[obj->ch] |= (GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos);// | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos); + } + } + oldPortValue = NRF_GPIO->IN; +} + +void gpio_irq_enable(gpio_irq_t *obj) { + channel_enabled[obj->ch]=1; +} + +void gpio_irq_disable(gpio_irq_t *obj) { + channel_enabled[obj->ch]=0; +} diff --git a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/i2c_api.c b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/i2c_api.c new file mode 100644 index 0000000000..00798598c6 --- /dev/null +++ b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/i2c_api.c @@ -0,0 +1,305 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "i2c_api.h" +#include "cmsis.h" +#include "pinmap.h" +#include "error.h" + + +/* +static const PinMap PinMap_I2C_SDA[] = { + {p9, I2C_0, 1}, + {NC , NC , 0} +}; + +static const PinMap PinMap_I2C_SCL[] = { + {p8, I2C_0, 1}, + {NC , NC, 0} +};*/ +uint8_t I2C_USED[] = {0,0}; +uint8_t addrSet=0; +void i2c_interface_enable(i2c_t *obj) +{ + obj->i2c->ENABLE = (TWI_ENABLE_ENABLE_Enabled << TWI_ENABLE_ENABLE_Pos); +} + +void twi_master_init(i2c_t *obj, PinName sda, PinName scl, int frequency) { + NRF_GPIO->PIN_CNF[scl] = ((GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos) | + (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | + (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) | + (GPIO_PIN_CNF_DRIVE_S0D1 << GPIO_PIN_CNF_DRIVE_Pos) | + (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)); + + NRF_GPIO->PIN_CNF[sda] = ((GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos) | + (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | + (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) | + (GPIO_PIN_CNF_DRIVE_S0D1 << GPIO_PIN_CNF_DRIVE_Pos) | + (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)); + + obj->i2c->PSELSCL = scl; + obj->i2c->PSELSDA = sda; + // set default frequency at 100k + i2c_frequency(obj, frequency); + i2c_interface_enable(obj); +} +void i2c_init(i2c_t *obj, PinName sda, PinName scl) { + // determine the SPI to use + // I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA); + // I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL); + if(I2C_USED[0]){ + if(I2C_USED[1]){ + error("All TWI peripherals in use."); + } + else + obj->i2c = (NRF_TWI_Type *)I2C_1; + } + else{ + obj->i2c = (NRF_TWI_Type *)I2C_0; + } + + if ((int)obj->i2c == NC) { + error("I2C pin mapping failed"); + } + + obj->scl=scl; + obj->sda=sda; + obj->i2c->EVENTS_ERROR = 0; + obj->i2c->ENABLE = TWI_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos; + obj->i2c->POWER = 0; + for(int i=0;i<100;i++); + obj->i2c->POWER = 1; + twi_master_init(obj,sda,scl,100000); +} +void i2c_reset(i2c_t *obj) { + obj->i2c->EVENTS_ERROR = 0; + obj->i2c->ENABLE = TWI_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos; + obj->i2c->POWER = 0; + for(int i=0;i<100;i++); + obj->i2c->POWER = 1; + twi_master_init(obj,obj->sda,obj->scl,obj->freq); +} + +inline int i2c_start(i2c_t *obj) { + int status = 0; + //obj->i2c->ADDRESS = 0; + i2c_reset(obj); + addrSet=0; + return status; +} + +inline int i2c_stop(i2c_t *obj) { + // int timeout = 0; + obj->i2c->EVENTS_STOPPED = 0; + // write the stop bit + obj->i2c->TASKS_STOP=1; + while(!obj->i2c->EVENTS_STOPPED) + { + } + //obj->i2c->ADDRESS = 0; + addrSet=0; + i2c_reset(obj); + //obj->i2c->EVENTS_STOPPED = 0; + return 0; +} + + +int i2c_do_write(i2c_t *obj, int value) { + int timeOut=1000; + obj->i2c->TXD = value; + while(!obj->i2c->EVENTS_TXDSENT){ + timeOut--; + if(timeOut<0) + return 1; + } + obj->i2c->EVENTS_TXDSENT = 0; + return 0; +} +int i2c_do_read(i2c_t *obj, char * data, int last) { + int timeOut=1000; + while(!obj->i2c->EVENTS_RXDREADY){ + timeOut--; + if(timeOut<0) + return 1; + } + obj->i2c->EVENTS_RXDREADY = 0; + + if (last) + obj->i2c->TASKS_STOP=1; + *data = obj->i2c->RXD; + + for(int i=0;i<320;i++); + + obj->i2c->TASKS_RESUME = 1; + + return 0; +} + + +void i2c_frequency(i2c_t *obj, int hz) { + obj->freq=hz; + switch(hz){ + case 100000:obj->i2c->FREQUENCY = (TWI_FREQUENCY_FREQUENCY_K100 << TWI_FREQUENCY_FREQUENCY_Pos);break; + case 250000:obj->i2c->FREQUENCY = (TWI_FREQUENCY_FREQUENCY_K250 << TWI_FREQUENCY_FREQUENCY_Pos);break; + case 400000:obj->i2c->FREQUENCY = (TWI_FREQUENCY_FREQUENCY_K400 << TWI_FREQUENCY_FREQUENCY_Pos);break; + default:error("I2C frequency requested is not supported"); break; + } + +} + +int checkError(i2c_t *obj) +{ + if (obj->i2c->EVENTS_ERROR == 1) + { + if ((obj->i2c->ERRORSRC & TWI_ERRORSRC_ANACK_Msk) == (TWI_ERRORSRC_ANACK_Present << TWI_ERRORSRC_ANACK_Pos)) + { + obj->i2c->EVENTS_ERROR = 0; + obj->i2c->TASKS_STOP = 1; + obj->i2c->ERRORSRC |= (TWI_ERRORSRC_ANACK_Present << TWI_ERRORSRC_ANACK_Pos); + return I2C_ERROR_BUS_BUSY; + } + } + if (obj->i2c->EVENTS_ERROR == 1) + { + obj->i2c->EVENTS_ERROR = 0; + obj->i2c->TASKS_STOP = 1; + + if ((obj->i2c->ERRORSRC & TWI_ERRORSRC_DNACK_Msk) == (TWI_ERRORSRC_DNACK_Present << TWI_ERRORSRC_DNACK_Pos)) + { + obj->i2c->ERRORSRC |= (TWI_ERRORSRC_DNACK_Present << TWI_ERRORSRC_DNACK_Pos); + return I2C_ERROR_NO_SLAVE; + } + } + return 0; +} + +// The I2C does a read or a write as a whole operation +// There are two types of error conditions it can encounter +// 1) it can not obtain the bus +// 2) it gets error responses at part of the transmission +// +// We tackle them as follows: +// 1) we retry until we get the bus. we could have a "timeout" if we can not get it +// which basically turns it in to a 2) +// 2) on error, we use the standard error mechanisms to report/debug +// +// Therefore an I2C transaction should always complete. If it doesn't it is usually +// because something is setup wrong (e.g. wiring), and we don't need to programatically +// check for that + +int i2c_read(i2c_t *obj, int address, char *data, int length, int stop) { + int status,count; + obj->i2c->ADDRESS = (address>>1); + obj->i2c->SHORTS = 0; + obj->i2c->EVENTS_RXDREADY = 0; + obj->i2c->TASKS_STARTRX = 1; + // Read in all except last byte + for (count = 0; count < (length - 1); count++) { + status = i2c_do_read(obj,&data[count], 0); + if (status) { + i2c_reset(obj); + int errorResult = checkError(obj); + if(errorResult<0) + return errorResult; + return count; + } + } + + /*status = i2c_do_read(obj,&data[length-2], 1); + if (status) { + i2c_reset(obj); + return length - 2; + }*/ + // read in last byte + status = i2c_do_read(obj,&data[length-1], 1); + if (status) { + i2c_reset(obj); + return length - 1; + } + // If not repeated start, send stop. + if (stop) { + while(!obj->i2c->EVENTS_STOPPED) + { + } + obj->i2c->EVENTS_STOPPED = 0; + } + return length; +} + +int i2c_write(i2c_t *obj, int address, const char *data, int length, int stop) { + int status; + obj->i2c->ADDRESS = (address>>1); + obj->i2c->SHORTS = 0; + //obj->i2c->EVENTS_STOPPED = 0; + obj->i2c->TASKS_STARTTX = 1; + for (int i=0; ii2c->ADDRESS==0) + { + addrSet=1; + obj->i2c->ADDRESS = (data>>1); + if(data&1) + { + obj->i2c->EVENTS_RXDREADY = 0; + obj->i2c->TASKS_STARTRX = 1; + } + else{ + obj->i2c->TASKS_STARTTX = 1; + } + } + else{ + status = i2c_do_write(obj, data); + if(status) { + i2c_reset(obj); + } + } + return (1-status); +} diff --git a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/objects.h b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/objects.h index a579bb642a..defd6473fd 100644 --- a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/objects.h +++ b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_nRF51822/objects.h @@ -48,33 +48,21 @@ struct pwmout_s { PinName pin; }; -/* -struct gpio_irq_s { - uint32_t port; - uint32_t pin; - uint32_t ch; +struct i2c_s { + NRF_TWI_Type *i2c; + PinName sda; + PinName scl; + int freq; }; -struct pwmout_s { - __IO uint32_t *MOD; - __IO uint32_t *CNT; - __IO uint32_t *CnV; -}; - - struct analogin_s { ADCName adc; }; -struct dac_s { - DACName dac; +struct gpio_irq_s { + uint32_t ch; }; -struct i2c_s { - I2C_Type *i2c; -}; - -*/ #include "gpio_object.h" #ifdef __cplusplus