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Diffstat (limited to 'src/sample/io_sample/LPC/Comparator/main.c')
| -rw-r--r-- | src/sample/io_sample/LPC/Comparator/main.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/sample/io_sample/LPC/Comparator/main.c b/src/sample/io_sample/LPC/Comparator/main.c new file mode 100644 index 0000000..8388f78 --- /dev/null +++ b/src/sample/io_sample/LPC/Comparator/main.c @@ -0,0 +1,174 @@ +/** +***************************************************************************************** +* Copyright(c) 2021, Realtek Semiconductor Corporation. All rights reserved. +***************************************************************************************** +* @file lpc.c +* @brief +* @author yuan +* @date 2021-05-04 +* @version v0.1 +************************************************************************************** +* @attention +* <h2><center>© COPYRIGHT 2021 Realtek Semiconductor Corporation</center></h2> +************************************************************************************** +*/ + +/*============================================================================* + * Header Files + *============================================================================*/ +#include "rtl876x_gpio.h" +#include "rtl876x_lpc.h" +#include "rtl876x_nvic.h" +#include "rtl876x_pinmux.h" +#include "rtl876x_rcc.h" +#include "rtl876x_rtc.h" + +#include "board.h" +#include "platform_utils.h" +#include "trace.h" + +#define LPC_CAPTURE_PIN P2_2 +#define LPC_CAPTURE_CHANNEL LPC_CHANNEL_P2_2 + +#define LPC_VOLTAGE_DETECT_EDGE LPC_Vin_Over_Vth; +#define LPC_VOLTAGE_DETECT_THRESHOLD LPC_2000_mV; + +#define LPC_COMP_VALUE 10 + +#define GPIO_OUTPUT_PIN_0 P2_4 +#define GPIO_PIN_OUTPUT_0 GPIO_GetPin(GPIO_OUTPUT_PIN_0) + +/** + * @brief Initialization of pinmux settings and pad settings. + * @param No parameter. + * @return None. + */ +void board_lpc_init(void) +{ + Pad_Config(LPC_CAPTURE_PIN, PAD_SW_MODE, PAD_IS_PWRON, PAD_PULL_NONE, PAD_OUT_DISABLE, + PAD_OUT_HIGH); + Pinmux_Config(LPC_CAPTURE_PIN, IDLE_MODE); +} + +/** + * @brief Initialize RTC peripheral. + * @param No parameter. + * @return None. + */ +void driver_lpc_init(void) +{ + LPC_DeInit(); + LPC_InitTypeDef LPC_InitStruct; + LPC_StructInit(&LPC_InitStruct); + + LPC_InitStruct.LPC_Channel = LPC_CAPTURE_CHANNEL; + LPC_InitStruct.LPC_Edge = LPC_VOLTAGE_DETECT_EDGE; + LPC_InitStruct.LPC_Threshold = LPC_VOLTAGE_DETECT_THRESHOLD; + LPC_Init(&LPC_InitStruct); + LPC_Cmd(ENABLE); + + LPC_ResetCounter(); + LPC_SetCompValue(LPC_COMP_VALUE); + LPC_INTConfig(LPC_INT_LPCOMP_CNT, ENABLE); + + /* Config LPC interrupt */ + NVIC_InitTypeDef NVIC_InitStruct; + NVIC_InitStruct.NVIC_IRQChannel = LPCOMP_IRQn; + NVIC_InitStruct.NVIC_IRQChannelPriority = 2; + NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStruct); + + LPC_INTCmd(ENABLE); + LPC_CounterCmd(ENABLE); +} + +/** + * @brief Initialization of pinmux settings and pad settings. + * @param No parameter. + * @return None. +*/ +void board_gpio_init(void) +{ + Pad_Config(GPIO_OUTPUT_PIN_0, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_NONE, PAD_OUT_ENABLE, + PAD_OUT_HIGH); + + Pinmux_Config(GPIO_OUTPUT_PIN_0, DWGPIO); +} + +/** + * @brief Initialize GPIO peripheral. + * @param No parameter. + * @return void +*/ +void driver_gpio_init(void) +{ + /* Initialize GPIO peripheral */ + RCC_PeriphClockCmd(APBPeriph_GPIO, APBPeriph_GPIO_CLOCK, ENABLE); + + GPIO_InitTypeDef GPIO_InitStruct; + GPIO_StructInit(&GPIO_InitStruct); + + GPIO_InitStruct.GPIO_Pin = GPIO_PIN_OUTPUT_0; + GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT; + GPIO_Init(&GPIO_InitStruct); + + GPIO_WriteBit(GPIO_PIN_OUTPUT_0, (BitAction)(1)); +} + +void lpc_demo(void) +{ + board_lpc_init(); + driver_lpc_init(); + + /* GPIO output is only used to simulate the input signal, only for demo debugging. */ + board_gpio_init(); + driver_gpio_init(); + while (1) + { + /* Simulate GPIO trigger signal */ + for (uint32_t i = 0; i < 100000; i++); + GPIO_WriteBit(GPIO_PIN_OUTPUT_0, (BitAction)(1)); + for (uint32_t i = 0; i < 100000; i++); + GPIO_WriteBit(GPIO_PIN_OUTPUT_0, (BitAction)(0)); + } +} + +/** + * @brief Entry of APP code + * @return int (To avoid compile warning) + */ +int main(void) +{ + __enable_irq(); + + lpc_demo(); + + while (1) + { + __nop(); + __nop(); + __nop(); + __nop(); + __nop(); + __nop(); + } +} + +/** + * @brief LPC battery detection interrupt handle function. + * @param None. + * @return None. + */ +void LPCOMP_Handler(void) +{ + APP_PRINT_INFO0("LPCOMP_Handler\r\n"); + //Add Application code here + /* LPC counter comparator interrupt */ + if (LPC_GetINTStatus(LPC_INT_LPCOMP_CNT) == SET) + { + APP_PRINT_INFO2("LPC_INT_LPCOMP_CNT: counter = %d comp_value = %d\r\n", LPC_GetCounter(), + LPC_GetCompValue()); + LPC_SetCompValue(LPC_GetCounter() + LPC_COMP_VALUE); + LPC_ClearINTPendingBit(LPC_INT_LPCOMP_CNT); + } +} |