flipperzero-firmware/firmware/targets/f7/furi_hal/furi_hal_uart.c

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#include <furi_hal_uart.h>
#include <stdbool.h>
#include <stm32wbxx_ll_lpuart.h>
#include <stm32wbxx_ll_usart.h>
#include <stm32wbxx_ll_rcc.h>
#include <furi_hal_resources.h>
#include <furi.h>
#include <furi_hal_delay.h>
[FL-2399, FL-2261] Tickless sleep shenanigans (#1168) * Disable USART in sleep * Restore UART state on suspend/resume * FuriHal: Enable stop mode and add insomnia to I2C and SPI * Remove IDLE interrupt * FuriHal: add FPU isr and disable all FPU interrupt, add core2 stop mode configuration on deep sleep * FuriHal: tie stop mode debug with debug rtc flag * FuriHal: adjust flash latency on clock switch, tie mcu debug with RTC debug flag * FuriHal: move resource init to early stage * Add EXTI pending check, enable debug traps with compile-time flag * Wrap sleep debug functions in conditional compilation * Remove erroneous changed * Do not use CSS, remove it from everywhere * Enable/disable USB on VBUS connect (prototype) * FuriHal: add LPMS and DEEPSLEEP magic, workaround state inconsistency between cores * FuriHal: honor c1 LMPS * USB mode switch fix * Applications: add flags and insomnia bypass system * Correct spelling * FuriHal: cleanup insomnia usage, reset sleep flags on wakeup, add shutdown api * FuriHal: extra check on reinit request * FuriHal: rename gpio_display_rst pin to gpio_display_rst_n * FuriHal: add debug HAL * FuriHal: add some magic to core2 reload procedure, fix issue with crash on ble keyboard exit * FuriHal: cleanup ble glue, add BLE_GLUE_DEBUG flag * FuriHal: ble reinit API, move os timer to LPTIM1 for deep sleep capability, shutdown that works * FuriHal: take insomnia while shutdown * Remove USB switch on/off on VBUS change * Better tick skew handling * Improve tick consistency under load * Add USB_HP dummy IRQ handler * Move interrupt check closer to sleep * Clean up includes * Re-enable Insomnia globally * FuriHal: enable CSS * FuriHal: remove questionable core2 clock shenanigans * FuriHal: use core1 RCC registers in idle timer config * FuriHal: return back CSS handlers, add lptim isr dispatching Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com> Co-authored-by: nminaylov <nm29719@gmail.com>
2022-04-29 13:29:51 +00:00
static bool furi_hal_usart_prev_enabled[2];
static void (*irq_cb[2])(uint8_t ev, uint8_t data, void* context);
static void* irq_ctx[2];
static void furi_hal_usart_init(uint32_t baud) {
furi_hal_gpio_init_ex(
&gpio_usart_tx,
GpioModeAltFunctionPushPull,
GpioPullUp,
GpioSpeedVeryHigh,
GpioAltFn7USART1);
furi_hal_gpio_init_ex(
&gpio_usart_rx,
GpioModeAltFunctionPushPull,
GpioPullUp,
GpioSpeedVeryHigh,
GpioAltFn7USART1);
LL_USART_InitTypeDef USART_InitStruct = {0};
USART_InitStruct.PrescalerValue = LL_USART_PRESCALER_DIV1;
USART_InitStruct.BaudRate = baud;
USART_InitStruct.DataWidth = LL_USART_DATAWIDTH_8B;
USART_InitStruct.StopBits = LL_USART_STOPBITS_1;
USART_InitStruct.Parity = LL_USART_PARITY_NONE;
USART_InitStruct.TransferDirection = LL_USART_DIRECTION_TX_RX;
USART_InitStruct.HardwareFlowControl = LL_USART_HWCONTROL_NONE;
USART_InitStruct.OverSampling = LL_USART_OVERSAMPLING_16;
LL_USART_Init(USART1, &USART_InitStruct);
LL_USART_EnableFIFO(USART1);
LL_USART_ConfigAsyncMode(USART1);
LL_USART_Enable(USART1);
while(!LL_USART_IsActiveFlag_TEACK(USART1) || !LL_USART_IsActiveFlag_REACK(USART1))
;
LL_USART_EnableIT_RXNE_RXFNE(USART1);
NVIC_SetPriority(USART1_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), 5, 0));
}
static void furi_hal_lpuart_init(uint32_t baud) {
furi_hal_gpio_init_ex(
&gpio_ext_pc0,
GpioModeAltFunctionPushPull,
GpioPullUp,
GpioSpeedVeryHigh,
GpioAltFn8LPUART1);
furi_hal_gpio_init_ex(
&gpio_ext_pc1,
GpioModeAltFunctionPushPull,
GpioPullUp,
GpioSpeedVeryHigh,
GpioAltFn8LPUART1);
LL_LPUART_InitTypeDef LPUART_InitStruct = {0};
LPUART_InitStruct.PrescalerValue = LL_LPUART_PRESCALER_DIV1;
LPUART_InitStruct.BaudRate = 115200;
LPUART_InitStruct.DataWidth = LL_LPUART_DATAWIDTH_8B;
LPUART_InitStruct.StopBits = LL_LPUART_STOPBITS_1;
LPUART_InitStruct.Parity = LL_LPUART_PARITY_NONE;
LPUART_InitStruct.TransferDirection = LL_LPUART_DIRECTION_TX_RX;
LPUART_InitStruct.HardwareFlowControl = LL_LPUART_HWCONTROL_NONE;
LL_LPUART_Init(LPUART1, &LPUART_InitStruct);
LL_LPUART_EnableFIFO(LPUART1);
LL_LPUART_Enable(LPUART1);
while(!LL_LPUART_IsActiveFlag_TEACK(LPUART1) || !LL_LPUART_IsActiveFlag_REACK(LPUART1))
;
furi_hal_uart_set_br(FuriHalUartIdLPUART1, baud);
LL_LPUART_EnableIT_RXNE_RXFNE(LPUART1);
NVIC_SetPriority(LPUART1_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), 5, 0));
}
void furi_hal_uart_init(FuriHalUartId ch, uint32_t baud) {
if(ch == FuriHalUartIdLPUART1)
furi_hal_lpuart_init(baud);
else if(ch == FuriHalUartIdUSART1)
furi_hal_usart_init(baud);
}
void furi_hal_uart_set_br(FuriHalUartId ch, uint32_t baud) {
if(ch == FuriHalUartIdUSART1) {
if(LL_USART_IsEnabled(USART1)) {
// Wait for transfer complete flag
while(!LL_USART_IsActiveFlag_TC(USART1))
;
LL_USART_Disable(USART1);
uint32_t uartclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART1_CLKSOURCE);
LL_USART_SetBaudRate(
USART1, uartclk, LL_USART_PRESCALER_DIV1, LL_USART_OVERSAMPLING_16, baud);
LL_USART_Enable(USART1);
}
} else if(ch == FuriHalUartIdLPUART1) {
if(LL_LPUART_IsEnabled(LPUART1)) {
// Wait for transfer complete flag
while(!LL_LPUART_IsActiveFlag_TC(LPUART1))
;
LL_LPUART_Disable(LPUART1);
2021-11-15 20:36:57 +00:00
uint32_t uartclk = LL_RCC_GetLPUARTClockFreq(LL_RCC_LPUART1_CLKSOURCE);
if(uartclk / baud > 4095) {
LL_LPUART_SetPrescaler(LPUART1, LL_LPUART_PRESCALER_DIV32);
LL_LPUART_SetBaudRate(LPUART1, uartclk, LL_LPUART_PRESCALER_DIV32, baud);
} else {
LL_LPUART_SetPrescaler(LPUART1, LL_LPUART_PRESCALER_DIV1);
LL_LPUART_SetBaudRate(LPUART1, uartclk, LL_LPUART_PRESCALER_DIV1, baud);
}
LL_LPUART_Enable(LPUART1);
}
}
}
void furi_hal_uart_deinit(FuriHalUartId ch) {
furi_hal_uart_set_irq_cb(ch, NULL, NULL);
if(ch == FuriHalUartIdUSART1) {
LL_USART_Disable(USART1);
furi_hal_gpio_init(&gpio_usart_tx, GpioModeAnalog, GpioPullNo, GpioSpeedLow);
furi_hal_gpio_init(&gpio_usart_rx, GpioModeAnalog, GpioPullNo, GpioSpeedLow);
} else if(ch == FuriHalUartIdLPUART1) {
LL_LPUART_Disable(LPUART1);
furi_hal_gpio_init(&gpio_ext_pc0, GpioModeAnalog, GpioPullNo, GpioSpeedLow);
furi_hal_gpio_init(&gpio_ext_pc1, GpioModeAnalog, GpioPullNo, GpioSpeedLow);
}
}
[FL-2399, FL-2261] Tickless sleep shenanigans (#1168) * Disable USART in sleep * Restore UART state on suspend/resume * FuriHal: Enable stop mode and add insomnia to I2C and SPI * Remove IDLE interrupt * FuriHal: add FPU isr and disable all FPU interrupt, add core2 stop mode configuration on deep sleep * FuriHal: tie stop mode debug with debug rtc flag * FuriHal: adjust flash latency on clock switch, tie mcu debug with RTC debug flag * FuriHal: move resource init to early stage * Add EXTI pending check, enable debug traps with compile-time flag * Wrap sleep debug functions in conditional compilation * Remove erroneous changed * Do not use CSS, remove it from everywhere * Enable/disable USB on VBUS connect (prototype) * FuriHal: add LPMS and DEEPSLEEP magic, workaround state inconsistency between cores * FuriHal: honor c1 LMPS * USB mode switch fix * Applications: add flags and insomnia bypass system * Correct spelling * FuriHal: cleanup insomnia usage, reset sleep flags on wakeup, add shutdown api * FuriHal: extra check on reinit request * FuriHal: rename gpio_display_rst pin to gpio_display_rst_n * FuriHal: add debug HAL * FuriHal: add some magic to core2 reload procedure, fix issue with crash on ble keyboard exit * FuriHal: cleanup ble glue, add BLE_GLUE_DEBUG flag * FuriHal: ble reinit API, move os timer to LPTIM1 for deep sleep capability, shutdown that works * FuriHal: take insomnia while shutdown * Remove USB switch on/off on VBUS change * Better tick skew handling * Improve tick consistency under load * Add USB_HP dummy IRQ handler * Move interrupt check closer to sleep * Clean up includes * Re-enable Insomnia globally * FuriHal: enable CSS * FuriHal: remove questionable core2 clock shenanigans * FuriHal: use core1 RCC registers in idle timer config * FuriHal: return back CSS handlers, add lptim isr dispatching Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com> Co-authored-by: nminaylov <nm29719@gmail.com>
2022-04-29 13:29:51 +00:00
void furi_hal_uart_suspend(FuriHalUartId channel) {
if(channel == FuriHalUartIdLPUART1 && LL_LPUART_IsEnabled(LPUART1)) {
LL_LPUART_Disable(LPUART1);
furi_hal_usart_prev_enabled[channel] = true;
} else if(channel == FuriHalUartIdUSART1 && LL_USART_IsEnabled(USART1)) {
LL_USART_Disable(USART1);
furi_hal_usart_prev_enabled[channel] = true;
}
}
void furi_hal_uart_resume(FuriHalUartId channel) {
if(!furi_hal_usart_prev_enabled[channel]) {
return;
} else if(channel == FuriHalUartIdLPUART1) {
LL_LPUART_Enable(LPUART1);
} else if(channel == FuriHalUartIdUSART1) {
LL_USART_Enable(USART1);
}
furi_hal_usart_prev_enabled[channel] = false;
}
void furi_hal_uart_tx(FuriHalUartId ch, uint8_t* buffer, size_t buffer_size) {
if(ch == FuriHalUartIdUSART1) {
if(LL_USART_IsEnabled(USART1) == 0) return;
while(buffer_size > 0) {
while(!LL_USART_IsActiveFlag_TXE(USART1))
;
LL_USART_TransmitData8(USART1, *buffer);
buffer++;
buffer_size--;
}
} else if(ch == FuriHalUartIdLPUART1) {
if(LL_LPUART_IsEnabled(LPUART1) == 0) return;
while(buffer_size > 0) {
while(!LL_LPUART_IsActiveFlag_TXE(LPUART1))
;
LL_LPUART_TransmitData8(LPUART1, *buffer);
buffer++;
buffer_size--;
}
}
}
void furi_hal_uart_set_irq_cb(
FuriHalUartId ch,
void (*cb)(UartIrqEvent ev, uint8_t data, void* ctx),
void* ctx) {
if(cb == NULL) {
if(ch == FuriHalUartIdUSART1)
NVIC_DisableIRQ(USART1_IRQn);
else if(ch == FuriHalUartIdLPUART1)
NVIC_DisableIRQ(LPUART1_IRQn);
irq_cb[ch] = cb;
irq_ctx[ch] = ctx;
} else {
irq_ctx[ch] = ctx;
irq_cb[ch] = cb;
if(ch == FuriHalUartIdUSART1)
NVIC_EnableIRQ(USART1_IRQn);
else if(ch == FuriHalUartIdLPUART1)
NVIC_EnableIRQ(LPUART1_IRQn);
}
}
void LPUART1_IRQHandler(void) {
if(LL_LPUART_IsActiveFlag_RXNE_RXFNE(LPUART1)) {
uint8_t data = LL_LPUART_ReceiveData8(LPUART1);
irq_cb[FuriHalUartIdLPUART1](UartIrqEventRXNE, data, irq_ctx[FuriHalUartIdLPUART1]);
} else if(LL_LPUART_IsActiveFlag_ORE(LPUART1)) {
LL_LPUART_ClearFlag_ORE(LPUART1);
}
}
void USART1_IRQHandler(void) {
if(LL_USART_IsActiveFlag_RXNE_RXFNE(USART1)) {
uint8_t data = LL_USART_ReceiveData8(USART1);
irq_cb[FuriHalUartIdUSART1](UartIrqEventRXNE, data, irq_ctx[FuriHalUartIdUSART1]);
} else if(LL_USART_IsActiveFlag_ORE(USART1)) {
LL_USART_ClearFlag_ORE(USART1);
}
}