diff options
Diffstat (limited to 'examples/imx7_colibri_m4/low_power_demo/main.c')
| -rw-r--r-- | examples/imx7_colibri_m4/low_power_demo/main.c | 45 |
1 files changed, 41 insertions, 4 deletions
diff --git a/examples/imx7_colibri_m4/low_power_demo/main.c b/examples/imx7_colibri_m4/low_power_demo/main.c index 2ccac97..9029272 100644 --- a/examples/imx7_colibri_m4/low_power_demo/main.c +++ b/examples/imx7_colibri_m4/low_power_demo/main.c @@ -39,6 +39,7 @@ #include "gpio_imx.h" #include "ugui/ugui.h" #include "lpm_mcore.h" +#include "mu_imx.h" TaskHandle_t xLcdTaskHandle; @@ -215,6 +216,37 @@ void LCD_SetPixel(UG_S16 x, UG_S16 y, UG_COLOR c) fb[128 * page + x] |= bit; } +void mu_handle_message(uint32_t msg) +{ + static bool firstready = true; + switch(msg) { + case MU_LPM_M4_LPM_READY: + if (firstready) + LPM_MCORE_SendMessage(MU_LPM_M4_RELEASE_HIGH_BUS); + firstready = false; + + PRINTF("\n\rA7 ready\n\r"); + break; + case MU_LPM_M4_LPM_SLEEP: + PRINTF("\n\rA7 asleep\n\r"); + break; + default: + PRINTF("MSG %08x, \n\r", msg); + break; + } +} + +void MU_M4_Handler(void) +{ + uint32_t msg; + + if (MU_TryReceiveMsg(MUB, 0, &msg) == kStatus_MU_Success) + mu_handle_message(msg); + + + return; +} + UG_GUI gui; void LCD_Task(void *pvParameters) @@ -295,12 +327,13 @@ void LCD_Task(void *pvParameters) vTaskDelay(5000); PRINTF("done"); - PRINTF("\r\nCPU spinning, press any character: "); + PRINTF("\r\nCPU spinning, press any character (s sends msg): "); control_char = GETCHAR(); - PRINTF("%c", control_char);/* + PRINTF("%c", control_char); if ((control_char == 's') || (control_char == 'S')) { - break; - }*/ + PRINTF("\r\nSending msg to A7..."); + LPM_MCORE_SendMessage(MSG_LPM_M4_WAIT); + } } /* uint8_t page[128]; @@ -349,6 +382,10 @@ int main(void) LPM_MCORE_ChangeM4Clock(LPM_M4_LOW_FREQ); PRINTF("\n\r=> Low Power Demo\n\r"); + NVIC_SetPriority(MU_M4_IRQn, 3); + NVIC_EnableIRQ(MU_M4_IRQn); + MU_EnableRxFullInt(MUB, 0); + xTaskCreate(LCD_Task, "LCD Task", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY+1, &xLcdTaskHandle); |